Home / 25,881.10-38,830.76-12,742.70

Finding the Fourth Proportional to 25,881.10, 38,830.76 and 12,742.70

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Solution

The fourth proportional to 25,881.10, 38,830.76 and 12,742.70 is: 19,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,881.10 : 38,830.76 = 12,742.70 : x
  2. Step 2: Convert to fraction form
    25,881.10/38,830.76 = 12,742.70/x
  3. Step 3: Cross multiply
    25,881.10x = 38,830.76 × 12,742.70
  4. Step 4: Simplify right side
    25,881.10x = 494,808,467.58
  5. Step 5: Solve for x
    x = 494,808,467.58/25,881.10
  6. Step 6: Final answer
    x = 19,118.53

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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.