Home / 22,947.78-31,666.81-13,009.86

Finding the Fourth Proportional to 22,947.78, 31,666.81 and 13,009.86

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Solution

The fourth proportional to 22,947.78, 31,666.81 and 13,009.86 is: 17,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,947.78 : 31,666.81 = 13,009.86 : x
  2. Step 2: Convert to fraction form
    22,947.78/31,666.81 = 13,009.86/x
  3. Step 3: Cross multiply
    22,947.78x = 31,666.81 × 13,009.86
  4. Step 4: Simplify right side
    22,947.78x = 411,980,764.75
  5. Step 5: Solve for x
    x = 411,980,764.75/22,947.78
  6. Step 6: Final answer
    x = 17,952.97

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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.