Home / 20,570.35-30,849.14-7,421.01

Finding the Fourth Proportional to 20,570.35, 30,849.14 and 7,421.01

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Solution

The fourth proportional to 20,570.35, 30,849.14 and 7,421.01 is: 11,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.35 : 30,849.14 = 7,421.01 : x
  2. Step 2: Convert to fraction form
    20,570.35/30,849.14 = 7,421.01/x
  3. Step 3: Cross multiply
    20,570.35x = 30,849.14 × 7,421.01
  4. Step 4: Simplify right side
    20,570.35x = 228,931,585.08
  5. Step 5: Solve for x
    x = 228,931,585.08/20,570.35
  6. Step 6: Final answer
    x = 11,129.20

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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.