Home / 20,712.18-31,068.09-13,723.50

Finding the Fourth Proportional to 20,712.18, 31,068.09 and 13,723.50

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Solution

The fourth proportional to 20,712.18, 31,068.09 and 13,723.50 is: 20,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.18 : 31,068.09 = 13,723.50 : x
  2. Step 2: Convert to fraction form
    20,712.18/31,068.09 = 13,723.50/x
  3. Step 3: Cross multiply
    20,712.18x = 31,068.09 × 13,723.50
  4. Step 4: Simplify right side
    20,712.18x = 426,362,933.12
  5. Step 5: Solve for x
    x = 426,362,933.12/20,712.18
  6. Step 6: Final answer
    x = 20,585.13

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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.