Home / 20,470.08-30,711.36-10,616.40

Finding the Fourth Proportional to 20,470.08, 30,711.36 and 10,616.40

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Solution

The fourth proportional to 20,470.08, 30,711.36 and 10,616.40 is: 15,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.08 : 30,711.36 = 10,616.40 : x
  2. Step 2: Convert to fraction form
    20,470.08/30,711.36 = 10,616.40/x
  3. Step 3: Cross multiply
    20,470.08x = 30,711.36 × 10,616.40
  4. Step 4: Simplify right side
    20,470.08x = 326,044,082.30
  5. Step 5: Solve for x
    x = 326,044,082.30/20,470.08
  6. Step 6: Final answer
    x = 15,927.84

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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.