Home / 31,150.02-42,985.40-17,000.12

Finding the Fourth Proportional to 31,150.02, 42,985.40 and 17,000.12

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Solution

The fourth proportional to 31,150.02, 42,985.40 and 17,000.12 is: 23,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,150.02 : 42,985.40 = 17,000.12 : x
  2. Step 2: Convert to fraction form
    31,150.02/42,985.40 = 17,000.12/x
  3. Step 3: Cross multiply
    31,150.02x = 42,985.40 × 17,000.12
  4. Step 4: Simplify right side
    31,150.02x = 730,756,958.25
  5. Step 5: Solve for x
    x = 730,756,958.25/31,150.02
  6. Step 6: Final answer
    x = 23,459.28

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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.