Home / 10,922.04-15,079.29-7,742.07

Finding the Fourth Proportional to 10,922.04, 15,079.29 and 7,742.07

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Solution

The fourth proportional to 10,922.04, 15,079.29 and 7,742.07 is: 10,688.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,922.04 : 15,079.29 = 7,742.07 : x
  2. Step 2: Convert to fraction form
    10,922.04/15,079.29 = 7,742.07/x
  3. Step 3: Cross multiply
    10,922.04x = 15,079.29 × 7,742.07
  4. Step 4: Simplify right side
    10,922.04x = 116,744,918.73
  5. Step 5: Solve for x
    x = 116,744,918.73/10,922.04
  6. Step 6: Final answer
    x = 10,688.93

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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.