Home / 12,821.02-17,693.10-7,156.13

Finding the Fourth Proportional to 12,821.02, 17,693.10 and 7,156.13

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Solution

The fourth proportional to 12,821.02, 17,693.10 and 7,156.13 is: 9,875.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.02 : 17,693.10 = 7,156.13 : x
  2. Step 2: Convert to fraction form
    12,821.02/17,693.10 = 7,156.13/x
  3. Step 3: Cross multiply
    12,821.02x = 17,693.10 × 7,156.13
  4. Step 4: Simplify right side
    12,821.02x = 126,614,035.24
  5. Step 5: Solve for x
    x = 126,614,035.24/12,821.02
  6. Step 6: Final answer
    x = 9,875.51

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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.