Home / 10,109.80-13,998.18-9,332.20

Finding the Fourth Proportional to 10,109.80, 13,998.18 and 9,332.20

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Solution

The fourth proportional to 10,109.80, 13,998.18 and 9,332.20 is: 12,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.80 : 13,998.18 = 9,332.20 : x
  2. Step 2: Convert to fraction form
    10,109.80/13,998.18 = 9,332.20/x
  3. Step 3: Cross multiply
    10,109.80x = 13,998.18 × 9,332.20
  4. Step 4: Simplify right side
    10,109.80x = 130,633,815.40
  5. Step 5: Solve for x
    x = 130,633,815.40/10,109.80
  6. Step 6: Final answer
    x = 12,921.50

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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.