Home / 20,138,680.40-30,219,830.40-7,360,476.80

Finding the Fourth Proportional to 20,138,680.40, 30,219,830.40 and 7,360,476.80

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Solution

The fourth proportional to 20,138,680.40, 30,219,830.40 and 7,360,476.80 is: 11,045,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138,680.40 : 30,219,830.40 = 7,360,476.80 : x
  2. Step 2: Convert to fraction form
    20,138,680.40/30,219,830.40 = 7,360,476.80/x
  3. Step 3: Cross multiply
    20,138,680.40x = 30,219,830.40 × 7,360,476.80
  4. Step 4: Simplify right side
    20,138,680.40x = 222,432,360,559,134.72
  5. Step 5: Solve for x
    x = 222,432,360,559,134.72/20,138,680.40
  6. Step 6: Final answer
    x = 11,045,031.56

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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.