Home / 15,582.45-21,502.95-8,507.49

Finding the Fourth Proportional to 15,582.45, 21,502.95 and 8,507.49

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Solution

The fourth proportional to 15,582.45, 21,502.95 and 8,507.49 is: 11,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.45 : 21,502.95 = 8,507.49 : x
  2. Step 2: Convert to fraction form
    15,582.45/21,502.95 = 8,507.49/x
  3. Step 3: Cross multiply
    15,582.45x = 21,502.95 × 8,507.49
  4. Step 4: Simplify right side
    15,582.45x = 182,936,132.10
  5. Step 5: Solve for x
    x = 182,936,132.10/15,582.45
  6. Step 6: Final answer
    x = 11,739.88

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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.