Home / 12,587.40-17,369.26-7,281.18

Finding the Fourth Proportional to 12,587.40, 17,369.26 and 7,281.18

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Solution

The fourth proportional to 12,587.40, 17,369.26 and 7,281.18 is: 10,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.40 : 17,369.26 = 7,281.18 : x
  2. Step 2: Convert to fraction form
    12,587.40/17,369.26 = 7,281.18/x
  3. Step 3: Cross multiply
    12,587.40x = 17,369.26 × 7,281.18
  4. Step 4: Simplify right side
    12,587.40x = 126,468,690.32
  5. Step 5: Solve for x
    x = 126,468,690.32/12,587.40
  6. Step 6: Final answer
    x = 10,047.24

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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.