Home / 28,955.12-43,438.18-9,974.72

Finding the Fourth Proportional to 28,955.12, 43,438.18 and 9,974.72

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Solution

The fourth proportional to 28,955.12, 43,438.18 and 9,974.72 is: 14,963.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955.12 : 43,438.18 = 9,974.72 : x
  2. Step 2: Convert to fraction form
    28,955.12/43,438.18 = 9,974.72/x
  3. Step 3: Cross multiply
    28,955.12x = 43,438.18 × 9,974.72
  4. Step 4: Simplify right side
    28,955.12x = 433,283,682.81
  5. Step 5: Solve for x
    x = 433,283,682.81/28,955.12
  6. Step 6: Final answer
    x = 14,963.97

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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.