Home / 28,441.19-42,628.56-21,398.58

Finding the Fourth Proportional to 28,441.19, 42,628.56 and 21,398.58

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Solution

The fourth proportional to 28,441.19, 42,628.56 and 21,398.58 is: 32,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,441.19 : 42,628.56 = 21,398.58 : x
  2. Step 2: Convert to fraction form
    28,441.19/42,628.56 = 21,398.58/x
  3. Step 3: Cross multiply
    28,441.19x = 42,628.56 × 21,398.58
  4. Step 4: Simplify right side
    28,441.19x = 912,190,491.80
  5. Step 5: Solve for x
    x = 912,190,491.80/28,441.19
  6. Step 6: Final answer
    x = 32,072.87

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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.