Home / 12,752.02-19,130.19-3,985.21

Finding the Fourth Proportional to 12,752.02, 19,130.19 and 3,985.21

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Solution

The fourth proportional to 12,752.02, 19,130.19 and 3,985.21 is: 5,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,752.02 : 19,130.19 = 3,985.21 : x
  2. Step 2: Convert to fraction form
    12,752.02/19,130.19 = 3,985.21/x
  3. Step 3: Cross multiply
    12,752.02x = 19,130.19 × 3,985.21
  4. Step 4: Simplify right side
    12,752.02x = 76,237,824.49
  5. Step 5: Solve for x
    x = 76,237,824.49/12,752.02
  6. Step 6: Final answer
    x = 5,978.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.