Home / 20,312.10-30,468.15-10,470.60

Finding the Fourth Proportional to 20,312.10, 30,468.15 and 10,470.60

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Solution

The fourth proportional to 20,312.10, 30,468.15 and 10,470.60 is: 15,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.10 : 30,468.15 = 10,470.60 : x
  2. Step 2: Convert to fraction form
    20,312.10/30,468.15 = 10,470.60/x
  3. Step 3: Cross multiply
    20,312.10x = 30,468.15 × 10,470.60
  4. Step 4: Simplify right side
    20,312.10x = 319,019,811.39
  5. Step 5: Solve for x
    x = 319,019,811.39/20,312.10
  6. Step 6: Final answer
    x = 15,705.90

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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.