Home / 28,438.32-42,649.74-11,803.08

Finding the Fourth Proportional to 28,438.32, 42,649.74 and 11,803.08

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Solution

The fourth proportional to 28,438.32, 42,649.74 and 11,803.08 is: 17,701.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.32 : 42,649.74 = 11,803.08 : x
  2. Step 2: Convert to fraction form
    28,438.32/42,649.74 = 11,803.08/x
  3. Step 3: Cross multiply
    28,438.32x = 42,649.74 × 11,803.08
  4. Step 4: Simplify right side
    28,438.32x = 503,398,293.20
  5. Step 5: Solve for x
    x = 503,398,293.20/28,438.32
  6. Step 6: Final answer
    x = 17,701.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.