Home / 30,947.64-46,429.28-8,761.20

Finding the Fourth Proportional to 30,947.64, 46,429.28 and 8,761.20

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Solution

The fourth proportional to 30,947.64, 46,429.28 and 8,761.20 is: 13,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,947.64 : 46,429.28 = 8,761.20 : x
  2. Step 2: Convert to fraction form
    30,947.64/46,429.28 = 8,761.20/x
  3. Step 3: Cross multiply
    30,947.64x = 46,429.28 × 8,761.20
  4. Step 4: Simplify right side
    30,947.64x = 406,776,164.13
  5. Step 5: Solve for x
    x = 406,776,164.13/30,947.64
  6. Step 6: Final answer
    x = 13,144.01

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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.