Home / 13,335.52-20,015.40-7,100.74

Finding the Fourth Proportional to 13,335.52, 20,015.40 and 7,100.74

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Solution

The fourth proportional to 13,335.52, 20,015.40 and 7,100.74 is: 10,657.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.52 : 20,015.40 = 7,100.74 : x
  2. Step 2: Convert to fraction form
    13,335.52/20,015.40 = 7,100.74/x
  3. Step 3: Cross multiply
    13,335.52x = 20,015.40 × 7,100.74
  4. Step 4: Simplify right side
    13,335.52x = 142,124,151.40
  5. Step 5: Solve for x
    x = 142,124,151.40/13,335.52
  6. Step 6: Final answer
    x = 10,657.56

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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.