Home / 13,219.47-19,831.84-4,456.89

Finding the Fourth Proportional to 13,219.47, 19,831.84 and 4,456.89

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Solution

The fourth proportional to 13,219.47, 19,831.84 and 4,456.89 is: 6,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.47 : 19,831.84 = 4,456.89 : x
  2. Step 2: Convert to fraction form
    13,219.47/19,831.84 = 4,456.89/x
  3. Step 3: Cross multiply
    13,219.47x = 19,831.84 × 4,456.89
  4. Step 4: Simplify right side
    13,219.47x = 88,388,318.24
  5. Step 5: Solve for x
    x = 88,388,318.24/13,219.47
  6. Step 6: Final answer
    x = 6,686.22

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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.