Home / 28,655.90-39,543.16-15,908.08

Finding the Fourth Proportional to 28,655.90, 39,543.16 and 15,908.08

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Solution

The fourth proportional to 28,655.90, 39,543.16 and 15,908.08 is: 21,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.90 : 39,543.16 = 15,908.08 : x
  2. Step 2: Convert to fraction form
    28,655.90/39,543.16 = 15,908.08/x
  3. Step 3: Cross multiply
    28,655.90x = 39,543.16 × 15,908.08
  4. Step 4: Simplify right side
    28,655.90x = 629,055,752.73
  5. Step 5: Solve for x
    x = 629,055,752.73/28,655.90
  6. Step 6: Final answer
    x = 21,952.05

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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.