Home / 30,557.14-42,165.16-17,125.32

Finding the Fourth Proportional to 30,557.14, 42,165.16 and 17,125.32

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Solution

The fourth proportional to 30,557.14, 42,165.16 and 17,125.32 is: 23,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.14 : 42,165.16 = 17,125.32 : x
  2. Step 2: Convert to fraction form
    30,557.14/42,165.16 = 17,125.32/x
  3. Step 3: Cross multiply
    30,557.14x = 42,165.16 × 17,125.32
  4. Step 4: Simplify right side
    30,557.14x = 722,091,857.85
  5. Step 5: Solve for x
    x = 722,091,857.85/30,557.14
  6. Step 6: Final answer
    x = 23,630.87

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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.