Home / 12,788.74-19,186.90-6,553.13

Finding the Fourth Proportional to 12,788.74, 19,186.90 and 6,553.13

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Solution

The fourth proportional to 12,788.74, 19,186.90 and 6,553.13 is: 9,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.74 : 19,186.90 = 6,553.13 : x
  2. Step 2: Convert to fraction form
    12,788.74/19,186.90 = 6,553.13/x
  3. Step 3: Cross multiply
    12,788.74x = 19,186.90 × 6,553.13
  4. Step 4: Simplify right side
    12,788.74x = 125,734,210.07
  5. Step 5: Solve for x
    x = 125,734,210.07/12,788.74
  6. Step 6: Final answer
    x = 9,831.64

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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.