Home / 30,972.85-42,739.45-17,541.43

Finding the Fourth Proportional to 30,972.85, 42,739.45 and 17,541.43

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Solution

The fourth proportional to 30,972.85, 42,739.45 and 17,541.43 is: 24,205.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.85 : 42,739.45 = 17,541.43 : x
  2. Step 2: Convert to fraction form
    30,972.85/42,739.45 = 17,541.43/x
  3. Step 3: Cross multiply
    30,972.85x = 42,739.45 × 17,541.43
  4. Step 4: Simplify right side
    30,972.85x = 749,710,919.71
  5. Step 5: Solve for x
    x = 749,710,919.71/30,972.85
  6. Step 6: Final answer
    x = 24,205.42

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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.