Home / 22,930.18-31,644.34-12,859.55

Finding the Fourth Proportional to 22,930.18, 31,644.34 and 12,859.55

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Solution

The fourth proportional to 22,930.18, 31,644.34 and 12,859.55 is: 17,746.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,930.18 : 31,644.34 = 12,859.55 : x
  2. Step 2: Convert to fraction form
    22,930.18/31,644.34 = 12,859.55/x
  3. Step 3: Cross multiply
    22,930.18x = 31,644.34 × 12,859.55
  4. Step 4: Simplify right side
    22,930.18x = 406,931,900.74
  5. Step 5: Solve for x
    x = 406,931,900.74/22,930.18
  6. Step 6: Final answer
    x = 17,746.57

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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.