Home / 30,875.73-42,609.29-18,945.65

Finding the Fourth Proportional to 30,875.73, 42,609.29 and 18,945.65

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Solution

The fourth proportional to 30,875.73, 42,609.29 and 18,945.65 is: 26,145.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,875.73 : 42,609.29 = 18,945.65 : x
  2. Step 2: Convert to fraction form
    30,875.73/42,609.29 = 18,945.65/x
  3. Step 3: Cross multiply
    30,875.73x = 42,609.29 × 18,945.65
  4. Step 4: Simplify right side
    30,875.73x = 807,260,387.31
  5. Step 5: Solve for x
    x = 807,260,387.31/30,875.73
  6. Step 6: Final answer
    x = 26,145.47

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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.