Home / 31,000.61-42,708.52-21,552.77

Finding the Fourth Proportional to 31,000.61, 42,708.52 and 21,552.77

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Solution

The fourth proportional to 31,000.61, 42,708.52 and 21,552.77 is: 29,692.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.61 : 42,708.52 = 21,552.77 : x
  2. Step 2: Convert to fraction form
    31,000.61/42,708.52 = 21,552.77/x
  3. Step 3: Cross multiply
    31,000.61x = 42,708.52 × 21,552.77
  4. Step 4: Simplify right side
    31,000.61x = 920,486,908.60
  5. Step 5: Solve for x
    x = 920,486,908.60/31,000.61
  6. Step 6: Final answer
    x = 29,692.54

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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.