Home / 28,654.56-39,543.84-16,721.28

Finding the Fourth Proportional to 28,654.56, 39,543.84 and 16,721.28

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Solution

The fourth proportional to 28,654.56, 39,543.84 and 16,721.28 is: 23,075.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.56 : 39,543.84 = 16,721.28 : x
  2. Step 2: Convert to fraction form
    28,654.56/39,543.84 = 16,721.28/x
  3. Step 3: Cross multiply
    28,654.56x = 39,543.84 × 16,721.28
  4. Step 4: Simplify right side
    28,654.56x = 661,223,620.92
  5. Step 5: Solve for x
    x = 661,223,620.92/28,654.56
  6. Step 6: Final answer
    x = 23,075.69

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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.