Home / 13,179,865.20-19,748,802.60-9,778,642.80

Finding the Fourth Proportional to 13,179,865.20, 19,748,802.60 and 9,778,642.80

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Solution

The fourth proportional to 13,179,865.20, 19,748,802.60 and 9,778,642.80 is: 14,652,387.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179,865.20 : 19,748,802.60 = 9,778,642.80 : x
  2. Step 2: Convert to fraction form
    13,179,865.20/19,748,802.60 = 9,778,642.80/x
  3. Step 3: Cross multiply
    13,179,865.20x = 19,748,802.60 × 9,778,642.80
  4. Step 4: Simplify right side
    13,179,865.20x = 193,116,486,353,111.31
  5. Step 5: Solve for x
    x = 193,116,486,353,111.31/13,179,865.20
  6. Step 6: Final answer
    x = 14,652,387.06

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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.