Home / 15,505.62-21,401.28-9,457.92

Finding the Fourth Proportional to 15,505.62, 21,401.28 and 9,457.92

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Solution

The fourth proportional to 15,505.62, 21,401.28 and 9,457.92 is: 13,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.62 : 21,401.28 = 9,457.92 : x
  2. Step 2: Convert to fraction form
    15,505.62/21,401.28 = 9,457.92/x
  3. Step 3: Cross multiply
    15,505.62x = 21,401.28 × 9,457.92
  4. Step 4: Simplify right side
    15,505.62x = 202,411,594.14
  5. Step 5: Solve for x
    x = 202,411,594.14/15,505.62
  6. Step 6: Final answer
    x = 13,054.08

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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.