Home / 12,546.28-18,838.38-9,970.12

Finding the Fourth Proportional to 12,546.28, 18,838.38 and 9,970.12

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Solution

The fourth proportional to 12,546.28, 18,838.38 and 9,970.12 is: 14,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,546.28 : 18,838.38 = 9,970.12 : x
  2. Step 2: Convert to fraction form
    12,546.28/18,838.38 = 9,970.12/x
  3. Step 3: Cross multiply
    12,546.28x = 18,838.38 × 9,970.12
  4. Step 4: Simplify right side
    12,546.28x = 187,820,909.21
  5. Step 5: Solve for x
    x = 187,820,909.21/12,546.28
  6. Step 6: Final answer
    x = 14,970.25

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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.