Home / 21,359,618.40-32,114,077.20-20,911,720.80

Finding the Fourth Proportional to 21,359,618.40, 32,114,077.20 and 20,911,720.80

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Solution

The fourth proportional to 21,359,618.40, 32,114,077.20 and 20,911,720.80 is: 31,440,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359,618.40 : 32,114,077.20 = 20,911,720.80 : x
  2. Step 2: Convert to fraction form
    21,359,618.40/32,114,077.20 = 20,911,720.80/x
  3. Step 3: Cross multiply
    21,359,618.40x = 32,114,077.20 × 20,911,720.80
  4. Step 4: Simplify right side
    21,359,618.40x = 671,560,616,156,045.75
  5. Step 5: Solve for x
    x = 671,560,616,156,045.75/21,359,618.40
  6. Step 6: Final answer
    x = 31,440,665.45

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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.