Home / 15,631.38-21,442.86-14,783.99

Finding the Fourth Proportional to 15,631.38, 21,442.86 and 14,783.99

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Solution

The fourth proportional to 15,631.38, 21,442.86 and 14,783.99 is: 20,280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.38 : 21,442.86 = 14,783.99 : x
  2. Step 2: Convert to fraction form
    15,631.38/21,442.86 = 14,783.99/x
  3. Step 3: Cross multiply
    15,631.38x = 21,442.86 × 14,783.99
  4. Step 4: Simplify right side
    15,631.38x = 317,010,920.60
  5. Step 5: Solve for x
    x = 317,010,920.60/15,631.38
  6. Step 6: Final answer
    x = 20,280.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.