Home / 13,688,949.36-18,890,750.48-7,577,377.86

Finding the Fourth Proportional to 13,688,949.36, 18,890,750.48 and 7,577,377.86

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Solution

The fourth proportional to 13,688,949.36, 18,890,750.48 and 7,577,377.86 is: 10,456,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688,949.36 : 18,890,750.48 = 7,577,377.86 : x
  2. Step 2: Convert to fraction form
    13,688,949.36/18,890,750.48 = 7,577,377.86/x
  3. Step 3: Cross multiply
    13,688,949.36x = 18,890,750.48 × 7,577,377.86
  4. Step 4: Simplify right side
    13,688,949.36x = 143,142,354,445,936.38
  5. Step 5: Solve for x
    x = 143,142,354,445,936.38/13,688,949.36
  6. Step 6: Final answer
    x = 10,456,781.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.