Home / 30,924.95-42,675.90-18,821.05

Finding the Fourth Proportional to 30,924.95, 42,675.90 and 18,821.05

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Solution

The fourth proportional to 30,924.95, 42,675.90 and 18,821.05 is: 25,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,924.95 : 42,675.90 = 18,821.05 : x
  2. Step 2: Convert to fraction form
    30,924.95/42,675.90 = 18,821.05/x
  3. Step 3: Cross multiply
    30,924.95x = 42,675.90 × 18,821.05
  4. Step 4: Simplify right side
    30,924.95x = 803,205,247.70
  5. Step 5: Solve for x
    x = 803,205,247.70/30,924.95
  6. Step 6: Final answer
    x = 25,972.73

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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.