Home / 28,442.09-39,250.80-15,695.51

Finding the Fourth Proportional to 28,442.09, 39,250.80 and 15,695.51

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Solution

The fourth proportional to 28,442.09, 39,250.80 and 15,695.51 is: 21,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.09 : 39,250.80 = 15,695.51 : x
  2. Step 2: Convert to fraction form
    28,442.09/39,250.80 = 15,695.51/x
  3. Step 3: Cross multiply
    28,442.09x = 39,250.80 × 15,695.51
  4. Step 4: Simplify right side
    28,442.09x = 616,061,323.91
  5. Step 5: Solve for x
    x = 616,061,323.91/28,442.09
  6. Step 6: Final answer
    x = 21,660.20

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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.