Home / 38,490.19-53,113.43-21,493.11

Finding the Fourth Proportional to 38,490.19, 53,113.43 and 21,493.11

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Solution

The fourth proportional to 38,490.19, 53,113.43 and 21,493.11 is: 29,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,490.19 : 53,113.43 = 21,493.11 : x
  2. Step 2: Convert to fraction form
    38,490.19/53,113.43 = 21,493.11/x
  3. Step 3: Cross multiply
    38,490.19x = 53,113.43 × 21,493.11
  4. Step 4: Simplify right side
    38,490.19x = 1,141,572,527.90
  5. Step 5: Solve for x
    x = 1,141,572,527.90/38,490.19
  6. Step 6: Final answer
    x = 29,658.79

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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.