Home / 9,899.04-13,660.65-5,422.80

Finding the Fourth Proportional to 9,899.04, 13,660.65 and 5,422.80

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Solution

The fourth proportional to 9,899.04, 13,660.65 and 5,422.80 is: 7,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.04 : 13,660.65 = 5,422.80 : x
  2. Step 2: Convert to fraction form
    9,899.04/13,660.65 = 5,422.80/x
  3. Step 3: Cross multiply
    9,899.04x = 13,660.65 × 5,422.80
  4. Step 4: Simplify right side
    9,899.04x = 74,078,972.82
  5. Step 5: Solve for x
    x = 74,078,972.82/9,899.04
  6. Step 6: Final answer
    x = 7,483.45

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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.