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Finding the Fourth Proportional to 18,888.43, 26,063.18 and 10,820.83

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Solution

The fourth proportional to 18,888.43, 26,063.18 and 10,820.83 is: 14,931.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.43 : 26,063.18 = 10,820.83 : x
  2. Step 2: Convert to fraction form
    18,888.43/26,063.18 = 10,820.83/x
  3. Step 3: Cross multiply
    18,888.43x = 26,063.18 × 10,820.83
  4. Step 4: Simplify right side
    18,888.43x = 282,025,240.04
  5. Step 5: Solve for x
    x = 282,025,240.04/18,888.43
  6. Step 6: Final answer
    x = 14,931.11

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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.