Home / 25,415.10-35,079.48-15,343.56

Finding the Fourth Proportional to 25,415.10, 35,079.48 and 15,343.56

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Solution

The fourth proportional to 25,415.10, 35,079.48 and 15,343.56 is: 21,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.10 : 35,079.48 = 15,343.56 : x
  2. Step 2: Convert to fraction form
    25,415.10/35,079.48 = 15,343.56/x
  3. Step 3: Cross multiply
    25,415.10x = 35,079.48 × 15,343.56
  4. Step 4: Simplify right side
    25,415.10x = 538,244,106.15
  5. Step 5: Solve for x
    x = 538,244,106.15/25,415.10
  6. Step 6: Final answer
    x = 21,178.12

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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.