Home / 31,068.38-42,878.60-18,325.16

Finding the Fourth Proportional to 31,068.38, 42,878.60 and 18,325.16

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Solution

The fourth proportional to 31,068.38, 42,878.60 and 18,325.16 is: 25,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,068.38 : 42,878.60 = 18,325.16 : x
  2. Step 2: Convert to fraction form
    31,068.38/42,878.60 = 18,325.16/x
  3. Step 3: Cross multiply
    31,068.38x = 42,878.60 × 18,325.16
  4. Step 4: Simplify right side
    31,068.38x = 785,757,113.95
  5. Step 5: Solve for x
    x = 785,757,113.95/31,068.38
  6. Step 6: Final answer
    x = 25,291.22

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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.