Home / 20,907.59-31,344.93-14,313.78

Finding the Fourth Proportional to 20,907.59, 31,344.93 and 14,313.78

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Solution

The fourth proportional to 20,907.59, 31,344.93 and 14,313.78 is: 21,459.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.59 : 31,344.93 = 14,313.78 : x
  2. Step 2: Convert to fraction form
    20,907.59/31,344.93 = 14,313.78/x
  3. Step 3: Cross multiply
    20,907.59x = 31,344.93 × 14,313.78
  4. Step 4: Simplify right side
    20,907.59x = 448,664,432.14
  5. Step 5: Solve for x
    x = 448,664,432.14/20,907.59
  6. Step 6: Final answer
    x = 21,459.41

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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.