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Finding the Fourth Proportional to 22,575.70, 31,180.71 and 21,263.50

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Solution

The fourth proportional to 22,575.70, 31,180.71 and 21,263.50 is: 29,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,575.70 : 31,180.71 = 21,263.50 : x
  2. Step 2: Convert to fraction form
    22,575.70/31,180.71 = 21,263.50/x
  3. Step 3: Cross multiply
    22,575.70x = 31,180.71 × 21,263.50
  4. Step 4: Simplify right side
    22,575.70x = 663,011,027.09
  5. Step 5: Solve for x
    x = 663,011,027.09/22,575.70
  6. Step 6: Final answer
    x = 29,368.35

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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.