Home / 28,401.90-42,599.94-12,607.20

Finding the Fourth Proportional to 28,401.90, 42,599.94 and 12,607.20

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Solution

The fourth proportional to 28,401.90, 42,599.94 and 12,607.20 is: 18,909.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.90 : 42,599.94 = 12,607.20 : x
  2. Step 2: Convert to fraction form
    28,401.90/42,599.94 = 12,607.20/x
  3. Step 3: Cross multiply
    28,401.90x = 42,599.94 × 12,607.20
  4. Step 4: Simplify right side
    28,401.90x = 537,065,963.57
  5. Step 5: Solve for x
    x = 537,065,963.57/28,401.90
  6. Step 6: Final answer
    x = 18,909.51

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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.