Home / 20,688.06-30,977-14,127.06

Finding the Fourth Proportional to 20,688.06, 30,977 and 14,127.06

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Solution

The fourth proportional to 20,688.06, 30,977 and 14,127.06 is: 21,152.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.06 : 30,977 = 14,127.06 : x
  2. Step 2: Convert to fraction form
    20,688.06/30,977 = 14,127.06/x
  3. Step 3: Cross multiply
    20,688.06x = 30,977 × 14,127.06
  4. Step 4: Simplify right side
    20,688.06x = 437,613,937.62
  5. Step 5: Solve for x
    x = 437,613,937.62/20,688.06
  6. Step 6: Final answer
    x = 21,152.97

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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.