Home / 13,765.47-20,657.93-5,445.77

Finding the Fourth Proportional to 13,765.47, 20,657.93 and 5,445.77

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Solution

The fourth proportional to 13,765.47, 20,657.93 and 5,445.77 is: 8,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.47 : 20,657.93 = 5,445.77 : x
  2. Step 2: Convert to fraction form
    13,765.47/20,657.93 = 5,445.77/x
  3. Step 3: Cross multiply
    13,765.47x = 20,657.93 × 5,445.77
  4. Step 4: Simplify right side
    13,765.47x = 112,498,335.46
  5. Step 5: Solve for x
    x = 112,498,335.46/13,765.47
  6. Step 6: Final answer
    x = 8,172.50

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1.5x scale

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.