Home / 25,893.18-38,774.16-20,688.12

Finding the Fourth Proportional to 25,893.18, 38,774.16 and 20,688.12

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Solution

The fourth proportional to 25,893.18, 38,774.16 and 20,688.12 is: 30,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,893.18 : 38,774.16 = 20,688.12 : x
  2. Step 2: Convert to fraction form
    25,893.18/38,774.16 = 20,688.12/x
  3. Step 3: Cross multiply
    25,893.18x = 38,774.16 × 20,688.12
  4. Step 4: Simplify right side
    25,893.18x = 802,164,474.98
  5. Step 5: Solve for x
    x = 802,164,474.98/25,893.18
  6. Step 6: Final answer
    x = 30,979.76

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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.