Home / 25,858.32-35,685-20,199.66

Finding the Fourth Proportional to 25,858.32, 35,685 and 20,199.66

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Solution

The fourth proportional to 25,858.32, 35,685 and 20,199.66 is: 27,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,858.32 : 35,685 = 20,199.66 : x
  2. Step 2: Convert to fraction form
    25,858.32/35,685 = 20,199.66/x
  3. Step 3: Cross multiply
    25,858.32x = 35,685 × 20,199.66
  4. Step 4: Simplify right side
    25,858.32x = 720,824,867.10
  5. Step 5: Solve for x
    x = 720,824,867.10/25,858.32
  6. Step 6: Final answer
    x = 27,875.94

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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.