Home / 15,159.96-20,920.23-8,445.06

Finding the Fourth Proportional to 15,159.96, 20,920.23 and 8,445.06

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Solution

The fourth proportional to 15,159.96, 20,920.23 and 8,445.06 is: 11,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159.96 : 20,920.23 = 8,445.06 : x
  2. Step 2: Convert to fraction form
    15,159.96/20,920.23 = 8,445.06/x
  3. Step 3: Cross multiply
    15,159.96x = 20,920.23 × 8,445.06
  4. Step 4: Simplify right side
    15,159.96x = 176,672,597.56
  5. Step 5: Solve for x
    x = 176,672,597.56/15,159.96
  6. Step 6: Final answer
    x = 11,653.90

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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.