Home / 28,264.40-42,445.20-20,002.40

Finding the Fourth Proportional to 28,264.40, 42,445.20 and 20,002.40

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Solution

The fourth proportional to 28,264.40, 42,445.20 and 20,002.40 is: 30,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.40 : 42,445.20 = 20,002.40 : x
  2. Step 2: Convert to fraction form
    28,264.40/42,445.20 = 20,002.40/x
  3. Step 3: Cross multiply
    28,264.40x = 42,445.20 × 20,002.40
  4. Step 4: Simplify right side
    28,264.40x = 849,005,868.48
  5. Step 5: Solve for x
    x = 849,005,868.48/28,264.40
  6. Step 6: Final answer
    x = 30,037.99

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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.