Home / 30,482.55-42,080.30-22,931.75

Finding the Fourth Proportional to 30,482.55, 42,080.30 and 22,931.75

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Solution

The fourth proportional to 30,482.55, 42,080.30 and 22,931.75 is: 31,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.55 : 42,080.30 = 22,931.75 : x
  2. Step 2: Convert to fraction form
    30,482.55/42,080.30 = 22,931.75/x
  3. Step 3: Cross multiply
    30,482.55x = 42,080.30 × 22,931.75
  4. Step 4: Simplify right side
    30,482.55x = 964,974,919.53
  5. Step 5: Solve for x
    x = 964,974,919.53/30,482.55
  6. Step 6: Final answer
    x = 31,656.63

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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.