Home / 15,505.29-21,386.43-9,529.11

Finding the Fourth Proportional to 15,505.29, 21,386.43 and 9,529.11

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Solution

The fourth proportional to 15,505.29, 21,386.43 and 9,529.11 is: 13,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.29 : 21,386.43 = 9,529.11 : x
  2. Step 2: Convert to fraction form
    15,505.29/21,386.43 = 9,529.11/x
  3. Step 3: Cross multiply
    15,505.29x = 21,386.43 × 9,529.11
  4. Step 4: Simplify right side
    15,505.29x = 203,793,643.98
  5. Step 5: Solve for x
    x = 203,793,643.98/15,505.29
  6. Step 6: Final answer
    x = 13,143.49

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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.