Home / 22,515.21-31,072.95-12,445.29

Finding the Fourth Proportional to 22,515.21, 31,072.95 and 12,445.29

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Solution

The fourth proportional to 22,515.21, 31,072.95 and 12,445.29 is: 17,175.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.21 : 31,072.95 = 12,445.29 : x
  2. Step 2: Convert to fraction form
    22,515.21/31,072.95 = 12,445.29/x
  3. Step 3: Cross multiply
    22,515.21x = 31,072.95 × 12,445.29
  4. Step 4: Simplify right side
    22,515.21x = 386,711,873.91
  5. Step 5: Solve for x
    x = 386,711,873.91/22,515.21
  6. Step 6: Final answer
    x = 17,175.58

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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.