Home / 15,726.65-21,703.29-9,013.55

Finding the Fourth Proportional to 15,726.65, 21,703.29 and 9,013.55

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Solution

The fourth proportional to 15,726.65, 21,703.29 and 9,013.55 is: 12,438.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.65 : 21,703.29 = 9,013.55 : x
  2. Step 2: Convert to fraction form
    15,726.65/21,703.29 = 9,013.55/x
  3. Step 3: Cross multiply
    15,726.65x = 21,703.29 × 9,013.55
  4. Step 4: Simplify right side
    15,726.65x = 195,623,581.06
  5. Step 5: Solve for x
    x = 195,623,581.06/15,726.65
  6. Step 6: Final answer
    x = 12,438.99

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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.