Home / 28,470.32-42,681.18-20,124.08

Finding the Fourth Proportional to 28,470.32, 42,681.18 and 20,124.08

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Solution

The fourth proportional to 28,470.32, 42,681.18 and 20,124.08 is: 30,168.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.32 : 42,681.18 = 20,124.08 : x
  2. Step 2: Convert to fraction form
    28,470.32/42,681.18 = 20,124.08/x
  3. Step 3: Cross multiply
    28,470.32x = 42,681.18 × 20,124.08
  4. Step 4: Simplify right side
    28,470.32x = 858,919,389.73
  5. Step 5: Solve for x
    x = 858,919,389.73/28,470.32
  6. Step 6: Final answer
    x = 30,168.94

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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.