Home / 13,897.12-20,831.04-5,126.40

Finding the Fourth Proportional to 13,897.12, 20,831.04 and 5,126.40

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Solution

The fourth proportional to 13,897.12, 20,831.04 and 5,126.40 is: 7,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.12 : 20,831.04 = 5,126.40 : x
  2. Step 2: Convert to fraction form
    13,897.12/20,831.04 = 5,126.40/x
  3. Step 3: Cross multiply
    13,897.12x = 20,831.04 × 5,126.40
  4. Step 4: Simplify right side
    13,897.12x = 106,788,243.46
  5. Step 5: Solve for x
    x = 106,788,243.46/13,897.12
  6. Step 6: Final answer
    x = 7,684.20

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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.