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Finding the Fourth Proportional to 19,559,959.80, 29,339,939.70 and 18,730,649.40

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Solution

The fourth proportional to 19,559,959.80, 29,339,939.70 and 18,730,649.40 is: 28,095,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,559,959.80 : 29,339,939.70 = 18,730,649.40 : x
  2. Step 2: Convert to fraction form
    19,559,959.80/29,339,939.70 = 18,730,649.40/x
  3. Step 3: Cross multiply
    19,559,959.80x = 29,339,939.70 × 18,730,649.40
  4. Step 4: Simplify right side
    19,559,959.80x = 549,556,123,937,841.12
  5. Step 5: Solve for x
    x = 549,556,123,937,841.12/19,559,959.80
  6. Step 6: Final answer
    x = 28,095,974.10

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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.