Home / 28,301.16-39,055.52-15,728.36

Finding the Fourth Proportional to 28,301.16, 39,055.52 and 15,728.36

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Solution

The fourth proportional to 28,301.16, 39,055.52 and 15,728.36 is: 21,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,301.16 : 39,055.52 = 15,728.36 : x
  2. Step 2: Convert to fraction form
    28,301.16/39,055.52 = 15,728.36/x
  3. Step 3: Cross multiply
    28,301.16x = 39,055.52 × 15,728.36
  4. Step 4: Simplify right side
    28,301.16x = 614,279,278.55
  5. Step 5: Solve for x
    x = 614,279,278.55/28,301.16
  6. Step 6: Final answer
    x = 21,705.09

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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.