Home / 20,368,827.78-28,108,421.75-11,201,470.53

Finding the Fourth Proportional to 20,368,827.78, 28,108,421.75 and 11,201,470.53

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Solution

The fourth proportional to 20,368,827.78, 28,108,421.75 and 11,201,470.53 is: 15,457,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368,827.78 : 28,108,421.75 = 11,201,470.53 : x
  2. Step 2: Convert to fraction form
    20,368,827.78/28,108,421.75 = 11,201,470.53/x
  3. Step 3: Cross multiply
    20,368,827.78x = 28,108,421.75 × 11,201,470.53
  4. Step 4: Simplify right side
    20,368,827.78x = 314,855,657,800,033.12
  5. Step 5: Solve for x
    x = 314,855,657,800,033.12/20,368,827.78
  6. Step 6: Final answer
    x = 15,457,721.05

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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.