Home / 21,200.55-29,259.08-12,126.76

Finding the Fourth Proportional to 21,200.55, 29,259.08 and 12,126.76

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Solution

The fourth proportional to 21,200.55, 29,259.08 and 12,126.76 is: 16,736.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.55 : 29,259.08 = 12,126.76 : x
  2. Step 2: Convert to fraction form
    21,200.55/29,259.08 = 12,126.76/x
  3. Step 3: Cross multiply
    21,200.55x = 29,259.08 × 12,126.76
  4. Step 4: Simplify right side
    21,200.55x = 354,817,752.67
  5. Step 5: Solve for x
    x = 354,817,752.67/21,200.55
  6. Step 6: Final answer
    x = 16,736.26

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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.