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Finding the Fourth Proportional to 22,851.70, 31,535.02 and 12,780.06

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Solution

The fourth proportional to 22,851.70, 31,535.02 and 12,780.06 is: 17,636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,851.70 : 31,535.02 = 12,780.06 : x
  2. Step 2: Convert to fraction form
    22,851.70/31,535.02 = 12,780.06/x
  3. Step 3: Cross multiply
    22,851.70x = 31,535.02 × 12,780.06
  4. Step 4: Simplify right side
    22,851.70x = 403,019,447.70
  5. Step 5: Solve for x
    x = 403,019,447.70/22,851.70
  6. Step 6: Final answer
    x = 17,636.30

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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.