Home / 31,070.04-42,872.88-18,322.44

Finding the Fourth Proportional to 31,070.04, 42,872.88 and 18,322.44

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Solution

The fourth proportional to 31,070.04, 42,872.88 and 18,322.44 is: 25,282.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.04 : 42,872.88 = 18,322.44 : x
  2. Step 2: Convert to fraction form
    31,070.04/42,872.88 = 18,322.44/x
  3. Step 3: Cross multiply
    31,070.04x = 42,872.88 × 18,322.44
  4. Step 4: Simplify right side
    31,070.04x = 785,535,771.43
  5. Step 5: Solve for x
    x = 785,535,771.43/31,070.04
  6. Step 6: Final answer
    x = 25,282.74

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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.