Home / 25,816.32-35,619.84-15,206.40

Finding the Fourth Proportional to 25,816.32, 35,619.84 and 15,206.40

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Solution

The fourth proportional to 25,816.32, 35,619.84 and 15,206.40 is: 20,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,816.32 : 35,619.84 = 15,206.40 : x
  2. Step 2: Convert to fraction form
    25,816.32/35,619.84 = 15,206.40/x
  3. Step 3: Cross multiply
    25,816.32x = 35,619.84 × 15,206.40
  4. Step 4: Simplify right side
    25,816.32x = 541,649,534.98
  5. Step 5: Solve for x
    x = 541,649,534.98/25,816.32
  6. Step 6: Final answer
    x = 20,980.90

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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.