Home / 15,261.60-21,054.24-9,955.20

Finding the Fourth Proportional to 15,261.60, 21,054.24 and 9,955.20

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Solution

The fourth proportional to 15,261.60, 21,054.24 and 9,955.20 is: 13,733.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.60 : 21,054.24 = 9,955.20 : x
  2. Step 2: Convert to fraction form
    15,261.60/21,054.24 = 9,955.20/x
  3. Step 3: Cross multiply
    15,261.60x = 21,054.24 × 9,955.20
  4. Step 4: Simplify right side
    15,261.60x = 209,599,170.05
  5. Step 5: Solve for x
    x = 209,599,170.05/15,261.60
  6. Step 6: Final answer
    x = 13,733.76

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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.