Home / 28,442.19-42,630.06-21,399.58

Finding the Fourth Proportional to 28,442.19, 42,630.06 and 21,399.58

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Solution

The fourth proportional to 28,442.19, 42,630.06 and 21,399.58 is: 32,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.19 : 42,630.06 = 21,399.58 : x
  2. Step 2: Convert to fraction form
    28,442.19/42,630.06 = 21,399.58/x
  3. Step 3: Cross multiply
    28,442.19x = 42,630.06 × 21,399.58
  4. Step 4: Simplify right side
    28,442.19x = 912,265,379.37
  5. Step 5: Solve for x
    x = 912,265,379.37/28,442.19
  6. Step 6: Final answer
    x = 32,074.37

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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.