Home / 22,587.68-31,196.58-15,405.32

Finding the Fourth Proportional to 22,587.68, 31,196.58 and 15,405.32

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Solution

The fourth proportional to 22,587.68, 31,196.58 and 15,405.32 is: 21,276.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,587.68 : 31,196.58 = 15,405.32 : x
  2. Step 2: Convert to fraction form
    22,587.68/31,196.58 = 15,405.32/x
  3. Step 3: Cross multiply
    22,587.68x = 31,196.58 × 15,405.32
  4. Step 4: Simplify right side
    22,587.68x = 480,593,297.81
  5. Step 5: Solve for x
    x = 480,593,297.81/22,587.68
  6. Step 6: Final answer
    x = 21,276.79

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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.