Home / 11,113.80-15,338.93-6,400.81

Finding the Fourth Proportional to 11,113.80, 15,338.93 and 6,400.81

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Solution

The fourth proportional to 11,113.80, 15,338.93 and 6,400.81 is: 8,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.80 : 15,338.93 = 6,400.81 : x
  2. Step 2: Convert to fraction form
    11,113.80/15,338.93 = 6,400.81/x
  3. Step 3: Cross multiply
    11,113.80x = 15,338.93 × 6,400.81
  4. Step 4: Simplify right side
    11,113.80x = 98,181,576.53
  5. Step 5: Solve for x
    x = 98,181,576.53/11,113.80
  6. Step 6: Final answer
    x = 8,834.20

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1.5x scale

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.