Home / 9,939.68-13,718.40-7,577.36

Finding the Fourth Proportional to 9,939.68, 13,718.40 and 7,577.36

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Solution

The fourth proportional to 9,939.68, 13,718.40 and 7,577.36 is: 10,458.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.68 : 13,718.40 = 7,577.36 : x
  2. Step 2: Convert to fraction form
    9,939.68/13,718.40 = 7,577.36/x
  3. Step 3: Cross multiply
    9,939.68x = 13,718.40 × 7,577.36
  4. Step 4: Simplify right side
    9,939.68x = 103,949,255.42
  5. Step 5: Solve for x
    x = 103,949,255.42/9,939.68
  6. Step 6: Final answer
    x = 10,458.01

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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.