Home / 13,159.95-18,160.70-7,191.66

Finding the Fourth Proportional to 13,159.95, 18,160.70 and 7,191.66

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Solution

The fourth proportional to 13,159.95, 18,160.70 and 7,191.66 is: 9,924.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.95 : 18,160.70 = 7,191.66 : x
  2. Step 2: Convert to fraction form
    13,159.95/18,160.70 = 7,191.66/x
  3. Step 3: Cross multiply
    13,159.95x = 18,160.70 × 7,191.66
  4. Step 4: Simplify right side
    13,159.95x = 130,605,543.80
  5. Step 5: Solve for x
    x = 130,605,543.80/13,159.95
  6. Step 6: Final answer
    x = 9,924.47

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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.