Home / 14,775.21-20,387.36-8,807.13

Finding the Fourth Proportional to 14,775.21, 20,387.36 and 8,807.13

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Solution

The fourth proportional to 14,775.21, 20,387.36 and 8,807.13 is: 12,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.21 : 20,387.36 = 8,807.13 : x
  2. Step 2: Convert to fraction form
    14,775.21/20,387.36 = 8,807.13/x
  3. Step 3: Cross multiply
    14,775.21x = 20,387.36 × 8,807.13
  4. Step 4: Simplify right side
    14,775.21x = 179,554,085.84
  5. Step 5: Solve for x
    x = 179,554,085.84/14,775.21
  6. Step 6: Final answer
    x = 12,152.39

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Half scale
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Double scale
Find fourth proportional to 14,776.21, 20,388.73 and 8,808.13
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.