Home / 28,120.40-42,184.20-10,352.24

Finding the Fourth Proportional to 28,120.40, 42,184.20 and 10,352.24

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Solution

The fourth proportional to 28,120.40, 42,184.20 and 10,352.24 is: 15,529.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.40 : 42,184.20 = 10,352.24 : x
  2. Step 2: Convert to fraction form
    28,120.40/42,184.20 = 10,352.24/x
  3. Step 3: Cross multiply
    28,120.40x = 42,184.20 × 10,352.24
  4. Step 4: Simplify right side
    28,120.40x = 436,700,962.61
  5. Step 5: Solve for x
    x = 436,700,962.61/28,120.40
  6. Step 6: Final answer
    x = 15,529.69

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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.