Home / 13,343.32-20,011.51-3,981.25

Finding the Fourth Proportional to 13,343.32, 20,011.51 and 3,981.25

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Solution

The fourth proportional to 13,343.32, 20,011.51 and 3,981.25 is: 5,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.32 : 20,011.51 = 3,981.25 : x
  2. Step 2: Convert to fraction form
    13,343.32/20,011.51 = 3,981.25/x
  3. Step 3: Cross multiply
    13,343.32x = 20,011.51 × 3,981.25
  4. Step 4: Simplify right side
    13,343.32x = 79,670,831.78
  5. Step 5: Solve for x
    x = 79,670,831.78/13,343.32
  6. Step 6: Final answer
    x = 5,970.84

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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.