Home / 21,520.36-29,692.88-12,562.74

Finding the Fourth Proportional to 21,520.36, 29,692.88 and 12,562.74

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Solution

The fourth proportional to 21,520.36, 29,692.88 and 12,562.74 is: 17,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.36 : 29,692.88 = 12,562.74 : x
  2. Step 2: Convert to fraction form
    21,520.36/29,692.88 = 12,562.74/x
  3. Step 3: Cross multiply
    21,520.36x = 29,692.88 × 12,562.74
  4. Step 4: Simplify right side
    21,520.36x = 373,023,931.29
  5. Step 5: Solve for x
    x = 373,023,931.29/21,520.36
  6. Step 6: Final answer
    x = 17,333.54

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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.