Home / 13,275.86-18,321.18-7,307.78

Finding the Fourth Proportional to 13,275.86, 18,321.18 and 7,307.78

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Solution

The fourth proportional to 13,275.86, 18,321.18 and 7,307.78 is: 10,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.86 : 18,321.18 = 7,307.78 : x
  2. Step 2: Convert to fraction form
    13,275.86/18,321.18 = 7,307.78/x
  3. Step 3: Cross multiply
    13,275.86x = 18,321.18 × 7,307.78
  4. Step 4: Simplify right side
    13,275.86x = 133,887,116.24
  5. Step 5: Solve for x
    x = 133,887,116.24/13,275.86
  6. Step 6: Final answer
    x = 10,085.01

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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.