Home / 30,668.02-42,353.99-21,132.70

Finding the Fourth Proportional to 30,668.02, 42,353.99 and 21,132.70

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Solution

The fourth proportional to 30,668.02, 42,353.99 and 21,132.70 is: 29,185.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.02 : 42,353.99 = 21,132.70 : x
  2. Step 2: Convert to fraction form
    30,668.02/42,353.99 = 21,132.70/x
  3. Step 3: Cross multiply
    30,668.02x = 42,353.99 × 21,132.70
  4. Step 4: Simplify right side
    30,668.02x = 895,054,032.17
  5. Step 5: Solve for x
    x = 895,054,032.17/30,668.02
  6. Step 6: Final answer
    x = 29,185.26

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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.