Home / 15,349.93-21,153.95-13,449.13

Finding the Fourth Proportional to 15,349.93, 21,153.95 and 13,449.13

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Solution

The fourth proportional to 15,349.93, 21,153.95 and 13,449.13 is: 18,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.93 : 21,153.95 = 13,449.13 : x
  2. Step 2: Convert to fraction form
    15,349.93/21,153.95 = 13,449.13/x
  3. Step 3: Cross multiply
    15,349.93x = 21,153.95 × 13,449.13
  4. Step 4: Simplify right side
    15,349.93x = 284,502,223.56
  5. Step 5: Solve for x
    x = 284,502,223.56/15,349.93
  6. Step 6: Final answer
    x = 18,534.43

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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.