Home / 30,407.28-41,943.12-18,458.96

Finding the Fourth Proportional to 30,407.28, 41,943.12 and 18,458.96

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Solution

The fourth proportional to 30,407.28, 41,943.12 and 18,458.96 is: 25,461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,407.28 : 41,943.12 = 18,458.96 : x
  2. Step 2: Convert to fraction form
    30,407.28/41,943.12 = 18,458.96/x
  3. Step 3: Cross multiply
    30,407.28x = 41,943.12 × 18,458.96
  4. Step 4: Simplify right side
    30,407.28x = 774,226,374.36
  5. Step 5: Solve for x
    x = 774,226,374.36/30,407.28
  6. Step 6: Final answer
    x = 25,461.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.