Home / 12,945.47-17,869.14-8,971.81

Finding the Fourth Proportional to 12,945.47, 17,869.14 and 8,971.81

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Solution

The fourth proportional to 12,945.47, 17,869.14 and 8,971.81 is: 12,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.47 : 17,869.14 = 8,971.81 : x
  2. Step 2: Convert to fraction form
    12,945.47/17,869.14 = 8,971.81/x
  3. Step 3: Cross multiply
    12,945.47x = 17,869.14 × 8,971.81
  4. Step 4: Simplify right side
    12,945.47x = 160,318,484.27
  5. Step 5: Solve for x
    x = 160,318,484.27/12,945.47
  6. Step 6: Final answer
    x = 12,384.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.