Home / 22,701.60-31,328.40-12,631.20

Finding the Fourth Proportional to 22,701.60, 31,328.40 and 12,631.20

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Solution

The fourth proportional to 22,701.60, 31,328.40 and 12,631.20 is: 17,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,701.60 : 31,328.40 = 12,631.20 : x
  2. Step 2: Convert to fraction form
    22,701.60/31,328.40 = 12,631.20/x
  3. Step 3: Cross multiply
    22,701.60x = 31,328.40 × 12,631.20
  4. Step 4: Simplify right side
    22,701.60x = 395,715,286.08
  5. Step 5: Solve for x
    x = 395,715,286.08/22,701.60
  6. Step 6: Final answer
    x = 17,431.16

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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.