Home / 15,987.60-22,064.47-11,947.43

Finding the Fourth Proportional to 15,987.60, 22,064.47 and 11,947.43

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Solution

The fourth proportional to 15,987.60, 22,064.47 and 11,947.43 is: 16,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.60 : 22,064.47 = 11,947.43 : x
  2. Step 2: Convert to fraction form
    15,987.60/22,064.47 = 11,947.43/x
  3. Step 3: Cross multiply
    15,987.60x = 22,064.47 × 11,947.43
  4. Step 4: Simplify right side
    15,987.60x = 263,613,736.10
  5. Step 5: Solve for x
    x = 263,613,736.10/15,987.60
  6. Step 6: Final answer
    x = 16,488.64

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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.