Home / 13,518,945-20,280,959.89-5,432,561.71

Finding the Fourth Proportional to 13,518,945, 20,280,959.89 and 5,432,561.71

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Solution

The fourth proportional to 13,518,945, 20,280,959.89 and 5,432,561.71 is: 8,149,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518,945 : 20,280,959.89 = 5,432,561.71 : x
  2. Step 2: Convert to fraction form
    13,518,945/20,280,959.89 = 5,432,561.71/x
  3. Step 3: Cross multiply
    13,518,945x = 20,280,959.89 × 5,432,561.71
  4. Step 4: Simplify right side
    13,518,945x = 110,177,566,076,176
  5. Step 5: Solve for x
    x = 110,177,566,076,176/13,518,945
  6. Step 6: Final answer
    x = 8,149,864.21

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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.