Home / 30,810.08-42,517.86-17,381.29

Finding the Fourth Proportional to 30,810.08, 42,517.86 and 17,381.29

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Solution

The fourth proportional to 30,810.08, 42,517.86 and 17,381.29 is: 23,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.08 : 42,517.86 = 17,381.29 : x
  2. Step 2: Convert to fraction form
    30,810.08/42,517.86 = 17,381.29/x
  3. Step 3: Cross multiply
    30,810.08x = 42,517.86 × 17,381.29
  4. Step 4: Simplify right side
    30,810.08x = 739,015,254.84
  5. Step 5: Solve for x
    x = 739,015,254.84/30,810.08
  6. Step 6: Final answer
    x = 23,986.15

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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.