Home / 15,533.45-21,436.19-8,459.90

Finding the Fourth Proportional to 15,533.45, 21,436.19 and 8,459.90

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Solution

The fourth proportional to 15,533.45, 21,436.19 and 8,459.90 is: 11,674.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.45 : 21,436.19 = 8,459.90 : x
  2. Step 2: Convert to fraction form
    15,533.45/21,436.19 = 8,459.90/x
  3. Step 3: Cross multiply
    15,533.45x = 21,436.19 × 8,459.90
  4. Step 4: Simplify right side
    15,533.45x = 181,348,066.80
  5. Step 5: Solve for x
    x = 181,348,066.80/15,533.45
  6. Step 6: Final answer
    x = 11,674.68

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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.