Home / 31,090.46-42,904.76-16,943.28

Finding the Fourth Proportional to 31,090.46, 42,904.76 and 16,943.28

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Solution

The fourth proportional to 31,090.46, 42,904.76 and 16,943.28 is: 23,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,090.46 : 42,904.76 = 16,943.28 : x
  2. Step 2: Convert to fraction form
    31,090.46/42,904.76 = 16,943.28/x
  3. Step 3: Cross multiply
    31,090.46x = 42,904.76 × 16,943.28
  4. Step 4: Simplify right side
    31,090.46x = 726,947,362.01
  5. Step 5: Solve for x
    x = 726,947,362.01/31,090.46
  6. Step 6: Final answer
    x = 23,381.69

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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.