Home / 38,426.91-53,029.03-21,431.17

Finding the Fourth Proportional to 38,426.91, 53,029.03 and 21,431.17

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Solution

The fourth proportional to 38,426.91, 53,029.03 and 21,431.17 is: 29,574.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,426.91 : 53,029.03 = 21,431.17 : x
  2. Step 2: Convert to fraction form
    38,426.91/53,029.03 = 21,431.17/x
  3. Step 3: Cross multiply
    38,426.91x = 53,029.03 × 21,431.17
  4. Step 4: Simplify right side
    38,426.91x = 1,136,474,156.87
  5. Step 5: Solve for x
    x = 1,136,474,156.87/38,426.91
  6. Step 6: Final answer
    x = 29,574.96

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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.