Home / 15,159.49-20,919.55-8,444.75

Finding the Fourth Proportional to 15,159.49, 20,919.55 and 8,444.75

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Solution

The fourth proportional to 15,159.49, 20,919.55 and 8,444.75 is: 11,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159.49 : 20,919.55 = 8,444.75 : x
  2. Step 2: Convert to fraction form
    15,159.49/20,919.55 = 8,444.75/x
  3. Step 3: Cross multiply
    15,159.49x = 20,919.55 × 8,444.75
  4. Step 4: Simplify right side
    15,159.49x = 176,660,369.86
  5. Step 5: Solve for x
    x = 176,660,369.86/15,159.49
  6. Step 6: Final answer
    x = 11,653.45

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Double scale
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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.