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Finding the Fourth Proportional to 18,656,287.60, 28,026,421.80 and 18,152,402.80

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Solution

The fourth proportional to 18,656,287.60, 28,026,421.80 and 18,152,402.80 is: 27,269,460.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656,287.60 : 28,026,421.80 = 18,152,402.80 : x
  2. Step 2: Convert to fraction form
    18,656,287.60/28,026,421.80 = 18,152,402.80/x
  3. Step 3: Cross multiply
    18,656,287.60x = 28,026,421.80 × 18,152,402.80
  4. Step 4: Simplify right side
    18,656,287.60x = 508,746,897,556,301.06
  5. Step 5: Solve for x
    x = 508,746,897,556,301.06/18,656,287.60
  6. Step 6: Final answer
    x = 27,269,460.49

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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.