Home / 28,535.66-42,780.28-11,908.08

Finding the Fourth Proportional to 28,535.66, 42,780.28 and 11,908.08

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Solution

The fourth proportional to 28,535.66, 42,780.28 and 11,908.08 is: 17,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.66 : 42,780.28 = 11,908.08 : x
  2. Step 2: Convert to fraction form
    28,535.66/42,780.28 = 11,908.08/x
  3. Step 3: Cross multiply
    28,535.66x = 42,780.28 × 11,908.08
  4. Step 4: Simplify right side
    28,535.66x = 509,430,996.66
  5. Step 5: Solve for x
    x = 509,430,996.66/28,535.66
  6. Step 6: Final answer
    x = 17,852.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.