Home / 12,521.86-17,278.97-7,485.08

Finding the Fourth Proportional to 12,521.86, 17,278.97 and 7,485.08

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Solution

The fourth proportional to 12,521.86, 17,278.97 and 7,485.08 is: 10,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.86 : 17,278.97 = 7,485.08 : x
  2. Step 2: Convert to fraction form
    12,521.86/17,278.97 = 7,485.08/x
  3. Step 3: Cross multiply
    12,521.86x = 17,278.97 × 7,485.08
  4. Step 4: Simplify right side
    12,521.86x = 129,334,472.77
  5. Step 5: Solve for x
    x = 129,334,472.77/12,521.86
  6. Step 6: Final answer
    x = 10,328.69

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Half scale
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Double scale
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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.