Home / 10,986.31-15,152.80-7,957.01

Finding the Fourth Proportional to 10,986.31, 15,152.80 and 7,957.01

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Solution

The fourth proportional to 10,986.31, 15,152.80 and 7,957.01 is: 10,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.31 : 15,152.80 = 7,957.01 : x
  2. Step 2: Convert to fraction form
    10,986.31/15,152.80 = 7,957.01/x
  3. Step 3: Cross multiply
    10,986.31x = 15,152.80 × 7,957.01
  4. Step 4: Simplify right side
    10,986.31x = 120,570,981.13
  5. Step 5: Solve for x
    x = 120,570,981.13/10,986.31
  6. Step 6: Final answer
    x = 10,974.66

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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.