Home / 15,543.20-21,400.08-14,483.36

Finding the Fourth Proportional to 15,543.20, 21,400.08 and 14,483.36

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Solution

The fourth proportional to 15,543.20, 21,400.08 and 14,483.36 is: 19,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.20 : 21,400.08 = 14,483.36 : x
  2. Step 2: Convert to fraction form
    15,543.20/21,400.08 = 14,483.36/x
  3. Step 3: Cross multiply
    15,543.20x = 21,400.08 × 14,483.36
  4. Step 4: Simplify right side
    15,543.20x = 309,945,062.67
  5. Step 5: Solve for x
    x = 309,945,062.67/15,543.20
  6. Step 6: Final answer
    x = 19,940.88

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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.