Home / 20,800.79-28,701.77-11,848.47

Finding the Fourth Proportional to 20,800.79, 28,701.77 and 11,848.47

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Solution

The fourth proportional to 20,800.79, 28,701.77 and 11,848.47 is: 16,349.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.79 : 28,701.77 = 11,848.47 : x
  2. Step 2: Convert to fraction form
    20,800.79/28,701.77 = 11,848.47/x
  3. Step 3: Cross multiply
    20,800.79x = 28,701.77 × 11,848.47
  4. Step 4: Simplify right side
    20,800.79x = 340,072,001.55
  5. Step 5: Solve for x
    x = 340,072,001.55/20,800.79
  6. Step 6: Final answer
    x = 16,349.00

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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.