Home / 28,181.23-38,890.53-15,434.17

Finding the Fourth Proportional to 28,181.23, 38,890.53 and 15,434.17

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Solution

The fourth proportional to 28,181.23, 38,890.53 and 15,434.17 is: 21,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.23 : 38,890.53 = 15,434.17 : x
  2. Step 2: Convert to fraction form
    28,181.23/38,890.53 = 15,434.17/x
  3. Step 3: Cross multiply
    28,181.23x = 38,890.53 × 15,434.17
  4. Step 4: Simplify right side
    28,181.23x = 600,243,051.41
  5. Step 5: Solve for x
    x = 600,243,051.41/28,181.23
  6. Step 6: Final answer
    x = 21,299.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.