Home / 11,159.65-15,399.18-6,445.45

Finding the Fourth Proportional to 11,159.65, 15,399.18 and 6,445.45

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Solution

The fourth proportional to 11,159.65, 15,399.18 and 6,445.45 is: 8,894.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.65 : 15,399.18 = 6,445.45 : x
  2. Step 2: Convert to fraction form
    11,159.65/15,399.18 = 6,445.45/x
  3. Step 3: Cross multiply
    11,159.65x = 15,399.18 × 6,445.45
  4. Step 4: Simplify right side
    11,159.65x = 99,254,644.73
  5. Step 5: Solve for x
    x = 99,254,644.73/11,159.65
  6. Step 6: Final answer
    x = 8,894.06

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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.