Home / 21,024,072.80-31,536,109.20-18,756,591.20

Finding the Fourth Proportional to 21,024,072.80, 31,536,109.20 and 18,756,591.20

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Solution

The fourth proportional to 21,024,072.80, 31,536,109.20 and 18,756,591.20 is: 28,134,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024,072.80 : 31,536,109.20 = 18,756,591.20 : x
  2. Step 2: Convert to fraction form
    21,024,072.80/31,536,109.20 = 18,756,591.20/x
  3. Step 3: Cross multiply
    21,024,072.80x = 31,536,109.20 × 18,756,591.20
  4. Step 4: Simplify right side
    21,024,072.80x = 591,509,908,302,959
  5. Step 5: Solve for x
    x = 591,509,908,302,959/21,024,072.80
  6. Step 6: Final answer
    x = 28,134,886.80

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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.