Home / 15,242.05-20,987.29-13,343.01

Finding the Fourth Proportional to 15,242.05, 20,987.29 and 13,343.01

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Solution

The fourth proportional to 15,242.05, 20,987.29 and 13,343.01 is: 18,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,242.05 : 20,987.29 = 13,343.01 : x
  2. Step 2: Convert to fraction form
    15,242.05/20,987.29 = 13,343.01/x
  3. Step 3: Cross multiply
    15,242.05x = 20,987.29 × 13,343.01
  4. Step 4: Simplify right side
    15,242.05x = 280,033,558.32
  5. Step 5: Solve for x
    x = 280,033,558.32/15,242.05
  6. Step 6: Final answer
    x = 18,372.43

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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.