Home / 9,899.21-13,661.16-5,422.98

Finding the Fourth Proportional to 9,899.21, 13,661.16 and 5,422.98

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Solution

The fourth proportional to 9,899.21, 13,661.16 and 5,422.98 is: 7,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.21 : 13,661.16 = 5,422.98 : x
  2. Step 2: Convert to fraction form
    9,899.21/13,661.16 = 5,422.98/x
  3. Step 3: Cross multiply
    9,899.21x = 13,661.16 × 5,422.98
  4. Step 4: Simplify right side
    9,899.21x = 74,084,113.08
  5. Step 5: Solve for x
    x = 74,084,113.08/9,899.21
  6. Step 6: Final answer
    x = 7,483.84

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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.