Home / 13,159.69-18,160.73-7,191.61

Finding the Fourth Proportional to 13,159.69, 18,160.73 and 7,191.61

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Solution

The fourth proportional to 13,159.69, 18,160.73 and 7,191.61 is: 9,924.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.69 : 18,160.73 = 7,191.61 : x
  2. Step 2: Convert to fraction form
    13,159.69/18,160.73 = 7,191.61/x
  3. Step 3: Cross multiply
    13,159.69x = 18,160.73 × 7,191.61
  4. Step 4: Simplify right side
    13,159.69x = 130,604,887.48
  5. Step 5: Solve for x
    x = 130,604,887.48/13,159.69
  6. Step 6: Final answer
    x = 9,924.62

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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.