Home / 15,055.89-20,729.60-13,262.25

Finding the Fourth Proportional to 15,055.89, 20,729.60 and 13,262.25

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Solution

The fourth proportional to 15,055.89, 20,729.60 and 13,262.25 is: 18,260.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.89 : 20,729.60 = 13,262.25 : x
  2. Step 2: Convert to fraction form
    15,055.89/20,729.60 = 13,262.25/x
  3. Step 3: Cross multiply
    15,055.89x = 20,729.60 × 13,262.25
  4. Step 4: Simplify right side
    15,055.89x = 274,921,071.29
  5. Step 5: Solve for x
    x = 274,921,071.29/15,055.89
  6. Step 6: Final answer
    x = 18,260.03

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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.