Home / 28,472.16-39,291.39-15,726.16

Finding the Fourth Proportional to 28,472.16, 39,291.39 and 15,726.16

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Solution

The fourth proportional to 28,472.16, 39,291.39 and 15,726.16 is: 21,702.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.16 : 39,291.39 = 15,726.16 : x
  2. Step 2: Convert to fraction form
    28,472.16/39,291.39 = 15,726.16/x
  3. Step 3: Cross multiply
    28,472.16x = 39,291.39 × 15,726.16
  4. Step 4: Simplify right side
    28,472.16x = 617,902,812.25
  5. Step 5: Solve for x
    x = 617,902,812.25/28,472.16
  6. Step 6: Final answer
    x = 21,702.00

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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.