Home / 21,543.68-29,730.02-12,112.25

Finding the Fourth Proportional to 21,543.68, 29,730.02 and 12,112.25

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Solution

The fourth proportional to 21,543.68, 29,730.02 and 12,112.25 is: 16,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.68 : 29,730.02 = 12,112.25 : x
  2. Step 2: Convert to fraction form
    21,543.68/29,730.02 = 12,112.25/x
  3. Step 3: Cross multiply
    21,543.68x = 29,730.02 × 12,112.25
  4. Step 4: Simplify right side
    21,543.68x = 360,097,434.75
  5. Step 5: Solve for x
    x = 360,097,434.75/21,543.68
  6. Step 6: Final answer
    x = 16,714.76

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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.