Home / 20,368.96-30,549.04-7,221.76

Finding the Fourth Proportional to 20,368.96, 30,549.04 and 7,221.76

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Solution

The fourth proportional to 20,368.96, 30,549.04 and 7,221.76 is: 10,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.96 : 30,549.04 = 7,221.76 : x
  2. Step 2: Convert to fraction form
    20,368.96/30,549.04 = 7,221.76/x
  3. Step 3: Cross multiply
    20,368.96x = 30,549.04 × 7,221.76
  4. Step 4: Simplify right side
    20,368.96x = 220,617,835.11
  5. Step 5: Solve for x
    x = 220,617,835.11/20,368.96
  6. Step 6: Final answer
    x = 10,831.08

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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.