Home / 12,539.12-18,812.52-5,144.13

Finding the Fourth Proportional to 12,539.12, 18,812.52 and 5,144.13

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Solution

The fourth proportional to 12,539.12, 18,812.52 and 5,144.13 is: 7,717.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.12 : 18,812.52 = 5,144.13 : x
  2. Step 2: Convert to fraction form
    12,539.12/18,812.52 = 5,144.13/x
  3. Step 3: Cross multiply
    12,539.12x = 18,812.52 × 5,144.13
  4. Step 4: Simplify right side
    12,539.12x = 96,774,048.51
  5. Step 5: Solve for x
    x = 96,774,048.51/12,539.12
  6. Step 6: Final answer
    x = 7,717.77

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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.