Home / 15,507.55-21,391.29-9,755.84

Finding the Fourth Proportional to 15,507.55, 21,391.29 and 9,755.84

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Solution

The fourth proportional to 15,507.55, 21,391.29 and 9,755.84 is: 13,457.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.55 : 21,391.29 = 9,755.84 : x
  2. Step 2: Convert to fraction form
    15,507.55/21,391.29 = 9,755.84/x
  3. Step 3: Cross multiply
    15,507.55x = 21,391.29 × 9,755.84
  4. Step 4: Simplify right side
    15,507.55x = 208,690,056.11
  5. Step 5: Solve for x
    x = 208,690,056.11/15,507.55
  6. Step 6: Final answer
    x = 13,457.32

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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.