Home / 13,117.59-18,102.24-7,812.63

Finding the Fourth Proportional to 13,117.59, 18,102.24 and 7,812.63

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Solution

The fourth proportional to 13,117.59, 18,102.24 and 7,812.63 is: 10,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.59 : 18,102.24 = 7,812.63 : x
  2. Step 2: Convert to fraction form
    13,117.59/18,102.24 = 7,812.63/x
  3. Step 3: Cross multiply
    13,117.59x = 18,102.24 × 7,812.63
  4. Step 4: Simplify right side
    13,117.59x = 141,426,103.29
  5. Step 5: Solve for x
    x = 141,426,103.29/13,117.59
  6. Step 6: Final answer
    x = 10,781.41

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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.