Home / 20,612.32-28,419.88-17,419.84

Finding the Fourth Proportional to 20,612.32, 28,419.88 and 17,419.84

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Solution

The fourth proportional to 20,612.32, 28,419.88 and 17,419.84 is: 24,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.32 : 28,419.88 = 17,419.84 : x
  2. Step 2: Convert to fraction form
    20,612.32/28,419.88 = 17,419.84/x
  3. Step 3: Cross multiply
    20,612.32x = 28,419.88 × 17,419.84
  4. Step 4: Simplify right side
    20,612.32x = 495,069,762.42
  5. Step 5: Solve for x
    x = 495,069,762.42/20,612.32
  6. Step 6: Final answer
    x = 24,018.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.