Home / 31,103.04-42,922.08-18,356.32

Finding the Fourth Proportional to 31,103.04, 42,922.08 and 18,356.32

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Solution

The fourth proportional to 31,103.04, 42,922.08 and 18,356.32 is: 25,331.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,103.04 : 42,922.08 = 18,356.32 : x
  2. Step 2: Convert to fraction form
    31,103.04/42,922.08 = 18,356.32/x
  3. Step 3: Cross multiply
    31,103.04x = 42,922.08 × 18,356.32
  4. Step 4: Simplify right side
    31,103.04x = 787,891,435.55
  5. Step 5: Solve for x
    x = 787,891,435.55/31,103.04
  6. Step 6: Final answer
    x = 25,331.65

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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.