Home / 12,387.48-17,098-7,669.08

Finding the Fourth Proportional to 12,387.48, 17,098 and 7,669.08

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Solution

The fourth proportional to 12,387.48, 17,098 and 7,669.08 is: 10,585.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.48 : 17,098 = 7,669.08 : x
  2. Step 2: Convert to fraction form
    12,387.48/17,098 = 7,669.08/x
  3. Step 3: Cross multiply
    12,387.48x = 17,098 × 7,669.08
  4. Step 4: Simplify right side
    12,387.48x = 131,125,929.84
  5. Step 5: Solve for x
    x = 131,125,929.84/12,387.48
  6. Step 6: Final answer
    x = 10,585.36

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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.