Home / 12,971.68-19,423.92-9,447.20

Finding the Fourth Proportional to 12,971.68, 19,423.92 and 9,447.20

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Solution

The fourth proportional to 12,971.68, 19,423.92 and 9,447.20 is: 14,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.68 : 19,423.92 = 9,447.20 : x
  2. Step 2: Convert to fraction form
    12,971.68/19,423.92 = 9,447.20/x
  3. Step 3: Cross multiply
    12,971.68x = 19,423.92 × 9,447.20
  4. Step 4: Simplify right side
    12,971.68x = 183,501,657.02
  5. Step 5: Solve for x
    x = 183,501,657.02/12,971.68
  6. Step 6: Final answer
    x = 14,146.33

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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.