Home / 15,499.36-21,381.60-9,207.28

Finding the Fourth Proportional to 15,499.36, 21,381.60 and 9,207.28

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Solution

The fourth proportional to 15,499.36, 21,381.60 and 9,207.28 is: 12,701.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.36 : 21,381.60 = 9,207.28 : x
  2. Step 2: Convert to fraction form
    15,499.36/21,381.60 = 9,207.28/x
  3. Step 3: Cross multiply
    15,499.36x = 21,381.60 × 9,207.28
  4. Step 4: Simplify right side
    15,499.36x = 196,866,378.05
  5. Step 5: Solve for x
    x = 196,866,378.05/15,499.36
  6. Step 6: Final answer
    x = 12,701.58

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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.