Home / 28,535.84-42,780.56-11,908.28

Finding the Fourth Proportional to 28,535.84, 42,780.56 and 11,908.28

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Solution

The fourth proportional to 28,535.84, 42,780.56 and 11,908.28 is: 17,852.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.84 : 42,780.56 = 11,908.28 : x
  2. Step 2: Convert to fraction form
    28,535.84/42,780.56 = 11,908.28/x
  3. Step 3: Cross multiply
    28,535.84x = 42,780.56 × 11,908.28
  4. Step 4: Simplify right side
    28,535.84x = 509,442,887.04
  5. Step 5: Solve for x
    x = 509,442,887.04/28,535.84
  6. Step 6: Final answer
    x = 17,852.74

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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.