Home / 30,810.06-42,517.71-17,381.43

Finding the Fourth Proportional to 30,810.06, 42,517.71 and 17,381.43

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Solution

The fourth proportional to 30,810.06, 42,517.71 and 17,381.43 is: 23,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.06 : 42,517.71 = 17,381.43 : x
  2. Step 2: Convert to fraction form
    30,810.06/42,517.71 = 17,381.43/x
  3. Step 3: Cross multiply
    30,810.06x = 42,517.71 × 17,381.43
  4. Step 4: Simplify right side
    30,810.06x = 739,018,600.13
  5. Step 5: Solve for x
    x = 739,018,600.13/30,810.06
  6. Step 6: Final answer
    x = 23,986.28

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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.