Home / 12,585.12-17,374.14-7,870.92

Finding the Fourth Proportional to 12,585.12, 17,374.14 and 7,870.92

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Solution

The fourth proportional to 12,585.12, 17,374.14 and 7,870.92 is: 10,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.12 : 17,374.14 = 7,870.92 : x
  2. Step 2: Convert to fraction form
    12,585.12/17,374.14 = 7,870.92/x
  3. Step 3: Cross multiply
    12,585.12x = 17,374.14 × 7,870.92
  4. Step 4: Simplify right side
    12,585.12x = 136,750,466.01
  5. Step 5: Solve for x
    x = 136,750,466.01/12,585.12
  6. Step 6: Final answer
    x = 10,866.04

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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.