Home / 30,680.65-42,342.78-17,070.04

Finding the Fourth Proportional to 30,680.65, 42,342.78 and 17,070.04

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Solution

The fourth proportional to 30,680.65, 42,342.78 and 17,070.04 is: 23,558.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.65 : 42,342.78 = 17,070.04 : x
  2. Step 2: Convert to fraction form
    30,680.65/42,342.78 = 17,070.04/x
  3. Step 3: Cross multiply
    30,680.65x = 42,342.78 × 17,070.04
  4. Step 4: Simplify right side
    30,680.65x = 722,792,948.31
  5. Step 5: Solve for x
    x = 722,792,948.31/30,680.65
  6. Step 6: Final answer
    x = 23,558.59

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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.