Home / 20,331.60-30,473.10-10,465.80

Finding the Fourth Proportional to 20,331.60, 30,473.10 and 10,465.80

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Solution

The fourth proportional to 20,331.60, 30,473.10 and 10,465.80 is: 15,686.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.60 : 30,473.10 = 10,465.80 : x
  2. Step 2: Convert to fraction form
    20,331.60/30,473.10 = 10,465.80/x
  3. Step 3: Cross multiply
    20,331.60x = 30,473.10 × 10,465.80
  4. Step 4: Simplify right side
    20,331.60x = 318,925,369.98
  5. Step 5: Solve for x
    x = 318,925,369.98/20,331.60
  6. Step 6: Final answer
    x = 15,686.19

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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.