Home / 10,140.93-13,990.32-6,161.40

Finding the Fourth Proportional to 10,140.93, 13,990.32 and 6,161.40

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Solution

The fourth proportional to 10,140.93, 13,990.32 and 6,161.40 is: 8,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.93 : 13,990.32 = 6,161.40 : x
  2. Step 2: Convert to fraction form
    10,140.93/13,990.32 = 6,161.40/x
  3. Step 3: Cross multiply
    10,140.93x = 13,990.32 × 6,161.40
  4. Step 4: Simplify right side
    10,140.93x = 86,199,957.65
  5. Step 5: Solve for x
    x = 86,199,957.65/10,140.93
  6. Step 6: Final answer
    x = 8,500.20

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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.