Home / 28,619.97-42,931.86-9,901.81

Finding the Fourth Proportional to 28,619.97, 42,931.86 and 9,901.81

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Solution

The fourth proportional to 28,619.97, 42,931.86 and 9,901.81 is: 14,853.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.97 : 42,931.86 = 9,901.81 : x
  2. Step 2: Convert to fraction form
    28,619.97/42,931.86 = 9,901.81/x
  3. Step 3: Cross multiply
    28,619.97x = 42,931.86 × 9,901.81
  4. Step 4: Simplify right side
    28,619.97x = 425,103,120.67
  5. Step 5: Solve for x
    x = 425,103,120.67/28,619.97
  6. Step 6: Final answer
    x = 14,853.37

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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.