Home / 9,621.40-13,278.36-5,373.40

Finding the Fourth Proportional to 9,621.40, 13,278.36 and 5,373.40

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Solution

The fourth proportional to 9,621.40, 13,278.36 and 5,373.40 is: 7,415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.40 : 13,278.36 = 5,373.40 : x
  2. Step 2: Convert to fraction form
    9,621.40/13,278.36 = 5,373.40/x
  3. Step 3: Cross multiply
    9,621.40x = 13,278.36 × 5,373.40
  4. Step 4: Simplify right side
    9,621.40x = 71,349,939.62
  5. Step 5: Solve for x
    x = 71,349,939.62/9,621.40
  6. Step 6: Final answer
    x = 7,415.75

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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.