Home / 28,305.18-39,061.08-15,729.93

Finding the Fourth Proportional to 28,305.18, 39,061.08 and 15,729.93

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Solution

The fourth proportional to 28,305.18, 39,061.08 and 15,729.93 is: 21,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.18 : 39,061.08 = 15,729.93 : x
  2. Step 2: Convert to fraction form
    28,305.18/39,061.08 = 15,729.93/x
  3. Step 3: Cross multiply
    28,305.18x = 39,061.08 × 15,729.93
  4. Step 4: Simplify right side
    28,305.18x = 614,428,054.12
  5. Step 5: Solve for x
    x = 614,428,054.12/28,305.18
  6. Step 6: Final answer
    x = 21,707.27

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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.