Home / 19,190,654.72-28,793,938.56-8,402,387.20

Finding the Fourth Proportional to 19,190,654.72, 28,793,938.56 and 8,402,387.20

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Solution

The fourth proportional to 19,190,654.72, 28,793,938.56 and 8,402,387.20 is: 12,607,064.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190,654.72 : 28,793,938.56 = 8,402,387.20 : x
  2. Step 2: Convert to fraction form
    19,190,654.72/28,793,938.56 = 8,402,387.20/x
  3. Step 3: Cross multiply
    19,190,654.72x = 28,793,938.56 × 8,402,387.20
  4. Step 4: Simplify right side
    19,190,654.72x = 241,937,820,794,130.41
  5. Step 5: Solve for x
    x = 241,937,820,794,130.41/19,190,654.72
  6. Step 6: Final answer
    x = 12,607,064.44

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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.