Home / 31,165.02-42,999.66-19,829.88

Finding the Fourth Proportional to 31,165.02, 42,999.66 and 19,829.88

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Solution

The fourth proportional to 31,165.02, 42,999.66 and 19,829.88 is: 27,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,165.02 : 42,999.66 = 19,829.88 : x
  2. Step 2: Convert to fraction form
    31,165.02/42,999.66 = 19,829.88/x
  3. Step 3: Cross multiply
    31,165.02x = 42,999.66 × 19,829.88
  4. Step 4: Simplify right side
    31,165.02x = 852,678,097.84
  5. Step 5: Solve for x
    x = 852,678,097.84/31,165.02
  6. Step 6: Final answer
    x = 27,360.10

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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.