Home / 30,699.93-42,352.13-18,761.04

Finding the Fourth Proportional to 30,699.93, 42,352.13 and 18,761.04

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Solution

The fourth proportional to 30,699.93, 42,352.13 and 18,761.04 is: 25,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.93 : 42,352.13 = 18,761.04 : x
  2. Step 2: Convert to fraction form
    30,699.93/42,352.13 = 18,761.04/x
  3. Step 3: Cross multiply
    30,699.93x = 42,352.13 × 18,761.04
  4. Step 4: Simplify right side
    30,699.93x = 794,570,005.02
  5. Step 5: Solve for x
    x = 794,570,005.02/30,699.93
  6. Step 6: Final answer
    x = 25,881.82

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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.