Home / 22,890.08-31,588.31-12,681.78

Finding the Fourth Proportional to 22,890.08, 31,588.31 and 12,681.78

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Solution

The fourth proportional to 22,890.08, 31,588.31 and 12,681.78 is: 17,500.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,890.08 : 31,588.31 = 12,681.78 : x
  2. Step 2: Convert to fraction form
    22,890.08/31,588.31 = 12,681.78/x
  3. Step 3: Cross multiply
    22,890.08x = 31,588.31 × 12,681.78
  4. Step 4: Simplify right side
    22,890.08x = 400,595,997.99
  5. Step 5: Solve for x
    x = 400,595,997.99/22,890.08
  6. Step 6: Final answer
    x = 17,500.86

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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.