Home / 20,416.76-30,586.18-13,831.64

Finding the Fourth Proportional to 20,416.76, 30,586.18 and 13,831.64

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Solution

The fourth proportional to 20,416.76, 30,586.18 and 13,831.64 is: 20,721.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.76 : 30,586.18 = 13,831.64 : x
  2. Step 2: Convert to fraction form
    20,416.76/30,586.18 = 13,831.64/x
  3. Step 3: Cross multiply
    20,416.76x = 30,586.18 × 13,831.64
  4. Step 4: Simplify right side
    20,416.76x = 423,057,030.74
  5. Step 5: Solve for x
    x = 423,057,030.74/20,416.76
  6. Step 6: Final answer
    x = 20,721.07

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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.