Home / 22,890.56-31,590.14-12,818.41

Finding the Fourth Proportional to 22,890.56, 31,590.14 and 12,818.41

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Solution

The fourth proportional to 22,890.56, 31,590.14 and 12,818.41 is: 17,690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,890.56 : 31,590.14 = 12,818.41 : x
  2. Step 2: Convert to fraction form
    22,890.56/31,590.14 = 12,818.41/x
  3. Step 3: Cross multiply
    22,890.56x = 31,590.14 × 12,818.41
  4. Step 4: Simplify right side
    22,890.56x = 404,935,223.41
  5. Step 5: Solve for x
    x = 404,935,223.41/22,890.56
  6. Step 6: Final answer
    x = 17,690.06

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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.