Home / 28,450.07-42,641.84-21,407.47

Finding the Fourth Proportional to 28,450.07, 42,641.84 and 21,407.47

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Solution

The fourth proportional to 28,450.07, 42,641.84 and 21,407.47 is: 32,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.07 : 42,641.84 = 21,407.47 : x
  2. Step 2: Convert to fraction form
    28,450.07/42,641.84 = 21,407.47/x
  3. Step 3: Cross multiply
    28,450.07x = 42,641.84 × 21,407.47
  4. Step 4: Simplify right side
    28,450.07x = 912,854,097.32
  5. Step 5: Solve for x
    x = 912,854,097.32/28,450.07
  6. Step 6: Final answer
    x = 32,086.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.