Home / 30,669.70-42,319.02-17,239.18

Finding the Fourth Proportional to 30,669.70, 42,319.02 and 17,239.18

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Solution

The fourth proportional to 30,669.70, 42,319.02 and 17,239.18 is: 23,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,669.70 : 42,319.02 = 17,239.18 : x
  2. Step 2: Convert to fraction form
    30,669.70/42,319.02 = 17,239.18/x
  3. Step 3: Cross multiply
    30,669.70x = 42,319.02 × 17,239.18
  4. Step 4: Simplify right side
    30,669.70x = 729,545,203.20
  5. Step 5: Solve for x
    x = 729,545,203.20/30,669.70
  6. Step 6: Final answer
    x = 23,787.16

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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.