Home / 30,766.65-42,456.76-17,340.63

Finding the Fourth Proportional to 30,766.65, 42,456.76 and 17,340.63

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Solution

The fourth proportional to 30,766.65, 42,456.76 and 17,340.63 is: 23,929.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,766.65 : 42,456.76 = 17,340.63 : x
  2. Step 2: Convert to fraction form
    30,766.65/42,456.76 = 17,340.63/x
  3. Step 3: Cross multiply
    30,766.65x = 42,456.76 × 17,340.63
  4. Step 4: Simplify right side
    30,766.65x = 736,226,966.16
  5. Step 5: Solve for x
    x = 736,226,966.16/30,766.65
  6. Step 6: Final answer
    x = 23,929.38

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Double scale
Find fourth proportional to 30,767.65, 42,458.14 and 17,341.63
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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.