Home / 30,381.42-45,521.10-21,572.67

Finding the Fourth Proportional to 30,381.42, 45,521.10 and 21,572.67

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Solution

The fourth proportional to 30,381.42, 45,521.10 and 21,572.67 is: 32,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.42 : 45,521.10 = 21,572.67 : x
  2. Step 2: Convert to fraction form
    30,381.42/45,521.10 = 21,572.67/x
  3. Step 3: Cross multiply
    30,381.42x = 45,521.10 × 21,572.67
  4. Step 4: Simplify right side
    30,381.42x = 982,011,668.34
  5. Step 5: Solve for x
    x = 982,011,668.34/30,381.42
  6. Step 6: Final answer
    x = 32,322.77

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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.