Home / 30,823.20-42,535.80-18,084.06

Finding the Fourth Proportional to 30,823.20, 42,535.80 and 18,084.06

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Solution

The fourth proportional to 30,823.20, 42,535.80 and 18,084.06 is: 24,955.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,823.20 : 42,535.80 = 18,084.06 : x
  2. Step 2: Convert to fraction form
    30,823.20/42,535.80 = 18,084.06/x
  3. Step 3: Cross multiply
    30,823.20x = 42,535.80 × 18,084.06
  4. Step 4: Simplify right side
    30,823.20x = 769,219,959.35
  5. Step 5: Solve for x
    x = 769,219,959.35/30,823.20
  6. Step 6: Final answer
    x = 24,955.88

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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.