Home / 31,122.96-42,948-17,692.32

Finding the Fourth Proportional to 31,122.96, 42,948 and 17,692.32

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Solution

The fourth proportional to 31,122.96, 42,948 and 17,692.32 is: 24,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.96 : 42,948 = 17,692.32 : x
  2. Step 2: Convert to fraction form
    31,122.96/42,948 = 17,692.32/x
  3. Step 3: Cross multiply
    31,122.96x = 42,948 × 17,692.32
  4. Step 4: Simplify right side
    31,122.96x = 759,849,759.36
  5. Step 5: Solve for x
    x = 759,849,759.36/31,122.96
  6. Step 6: Final answer
    x = 24,414.44

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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.