Home / 28,018.91-42,029.28-11,378.58

Finding the Fourth Proportional to 28,018.91, 42,029.28 and 11,378.58

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Solution

The fourth proportional to 28,018.91, 42,029.28 and 11,378.58 is: 17,068.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.91 : 42,029.28 = 11,378.58 : x
  2. Step 2: Convert to fraction form
    28,018.91/42,029.28 = 11,378.58/x
  3. Step 3: Cross multiply
    28,018.91x = 42,029.28 × 11,378.58
  4. Step 4: Simplify right side
    28,018.91x = 478,233,367.21
  5. Step 5: Solve for x
    x = 478,233,367.21/28,018.91
  6. Step 6: Final answer
    x = 17,068.23

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1.5x scale

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.