Home / 19,990.10-29,927.55-12,214.10

Finding the Fourth Proportional to 19,990.10, 29,927.55 and 12,214.10

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Solution

The fourth proportional to 19,990.10, 29,927.55 and 12,214.10 is: 18,285.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.10 : 29,927.55 = 12,214.10 : x
  2. Step 2: Convert to fraction form
    19,990.10/29,927.55 = 12,214.10/x
  3. Step 3: Cross multiply
    19,990.10x = 29,927.55 × 12,214.10
  4. Step 4: Simplify right side
    19,990.10x = 365,538,088.46
  5. Step 5: Solve for x
    x = 365,538,088.46/19,990.10
  6. Step 6: Final answer
    x = 18,285.96

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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.