Home / 21,655.32-29,885.67-12,095.20

Finding the Fourth Proportional to 21,655.32, 29,885.67 and 12,095.20

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Solution

The fourth proportional to 21,655.32, 29,885.67 and 12,095.20 is: 16,692.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.32 : 29,885.67 = 12,095.20 : x
  2. Step 2: Convert to fraction form
    21,655.32/29,885.67 = 12,095.20/x
  3. Step 3: Cross multiply
    21,655.32x = 29,885.67 × 12,095.20
  4. Step 4: Simplify right side
    21,655.32x = 361,473,155.78
  5. Step 5: Solve for x
    x = 361,473,155.78/21,655.32
  6. Step 6: Final answer
    x = 16,692.12

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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.