Home / 14,807.76-20,429.60-9,218.40

Finding the Fourth Proportional to 14,807.76, 20,429.60 and 9,218.40

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Solution

The fourth proportional to 14,807.76, 20,429.60 and 9,218.40 is: 12,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,807.76 : 20,429.60 = 9,218.40 : x
  2. Step 2: Convert to fraction form
    14,807.76/20,429.60 = 9,218.40/x
  3. Step 3: Cross multiply
    14,807.76x = 20,429.60 × 9,218.40
  4. Step 4: Simplify right side
    14,807.76x = 188,328,224.64
  5. Step 5: Solve for x
    x = 188,328,224.64/14,807.76
  6. Step 6: Final answer
    x = 12,718.21

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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.