Home / 15,726.48-21,703.13-9,013.40

Finding the Fourth Proportional to 15,726.48, 21,703.13 and 9,013.40

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Solution

The fourth proportional to 15,726.48, 21,703.13 and 9,013.40 is: 12,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.48 : 21,703.13 = 9,013.40 : x
  2. Step 2: Convert to fraction form
    15,726.48/21,703.13 = 9,013.40/x
  3. Step 3: Cross multiply
    15,726.48x = 21,703.13 × 9,013.40
  4. Step 4: Simplify right side
    15,726.48x = 195,618,990.28
  5. Step 5: Solve for x
    x = 195,618,990.28/15,726.48
  6. Step 6: Final answer
    x = 12,438.83

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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.