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Finding the Fourth Proportional to 42,165.99, 63,265.44 and 15,889.20

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Solution

The fourth proportional to 42,165.99, 63,265.44 and 15,889.20 is: 23,840.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,165.99 : 63,265.44 = 15,889.20 : x
  2. Step 2: Convert to fraction form
    42,165.99/63,265.44 = 15,889.20/x
  3. Step 3: Cross multiply
    42,165.99x = 63,265.44 × 15,889.20
  4. Step 4: Simplify right side
    42,165.99x = 1,005,237,229.25
  5. Step 5: Solve for x
    x = 1,005,237,229.25/42,165.99
  6. Step 6: Final answer
    x = 23,840.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.