Home / 20,788.95-31,187.53-6,746.36

Finding the Fourth Proportional to 20,788.95, 31,187.53 and 6,746.36

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Solution

The fourth proportional to 20,788.95, 31,187.53 and 6,746.36 is: 10,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.95 : 31,187.53 = 6,746.36 : x
  2. Step 2: Convert to fraction form
    20,788.95/31,187.53 = 6,746.36/x
  3. Step 3: Cross multiply
    20,788.95x = 31,187.53 × 6,746.36
  4. Step 4: Simplify right side
    20,788.95x = 210,402,420.53
  5. Step 5: Solve for x
    x = 210,402,420.53/20,788.95
  6. Step 6: Final answer
    x = 10,120.88

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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.