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Finding the Fourth Proportional to 18,885.80, 26,064.54 and 10,820.22

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Solution

The fourth proportional to 18,885.80, 26,064.54 and 10,820.22 is: 14,933.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.80 : 26,064.54 = 10,820.22 : x
  2. Step 2: Convert to fraction form
    18,885.80/26,064.54 = 10,820.22/x
  3. Step 3: Cross multiply
    18,885.80x = 26,064.54 × 10,820.22
  4. Step 4: Simplify right side
    18,885.80x = 282,024,057.00
  5. Step 5: Solve for x
    x = 282,024,057.00/18,885.80
  6. Step 6: Final answer
    x = 14,933.13

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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.