Home / 20,616.90-30,937.23-12,317.10

Finding the Fourth Proportional to 20,616.90, 30,937.23 and 12,317.10

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Solution

The fourth proportional to 20,616.90, 30,937.23 and 12,317.10 is: 18,482.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.90 : 30,937.23 = 12,317.10 : x
  2. Step 2: Convert to fraction form
    20,616.90/30,937.23 = 12,317.10/x
  3. Step 3: Cross multiply
    20,616.90x = 30,937.23 × 12,317.10
  4. Step 4: Simplify right side
    20,616.90x = 381,056,955.63
  5. Step 5: Solve for x
    x = 381,056,955.63/20,616.90
  6. Step 6: Final answer
    x = 18,482.75

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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.