Home / 12,989.41-19,423.29-9,280.17

Finding the Fourth Proportional to 12,989.41, 19,423.29 and 9,280.17

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Solution

The fourth proportional to 12,989.41, 19,423.29 and 9,280.17 is: 13,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.41 : 19,423.29 = 9,280.17 : x
  2. Step 2: Convert to fraction form
    12,989.41/19,423.29 = 9,280.17/x
  3. Step 3: Cross multiply
    12,989.41x = 19,423.29 × 9,280.17
  4. Step 4: Simplify right side
    12,989.41x = 180,251,467.96
  5. Step 5: Solve for x
    x = 180,251,467.96/12,989.41
  6. Step 6: Final answer
    x = 13,876.80

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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.