Home / 25,621.40-35,361-15,015.28

Finding the Fourth Proportional to 25,621.40, 35,361 and 15,015.28

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Solution

The fourth proportional to 25,621.40, 35,361 and 15,015.28 is: 20,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,621.40 : 35,361 = 15,015.28 : x
  2. Step 2: Convert to fraction form
    25,621.40/35,361 = 15,015.28/x
  3. Step 3: Cross multiply
    25,621.40x = 35,361 × 15,015.28
  4. Step 4: Simplify right side
    25,621.40x = 530,955,316.08
  5. Step 5: Solve for x
    x = 530,955,316.08/25,621.40
  6. Step 6: Final answer
    x = 20,723.12

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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.