Home / 21,114.76-31,672.11-10,015.39

Finding the Fourth Proportional to 21,114.76, 31,672.11 and 10,015.39

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Solution

The fourth proportional to 21,114.76, 31,672.11 and 10,015.39 is: 15,023.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.76 : 31,672.11 = 10,015.39 : x
  2. Step 2: Convert to fraction form
    21,114.76/31,672.11 = 10,015.39/x
  3. Step 3: Cross multiply
    21,114.76x = 31,672.11 × 10,015.39
  4. Step 4: Simplify right side
    21,114.76x = 317,208,533.77
  5. Step 5: Solve for x
    x = 317,208,533.77/21,114.76
  6. Step 6: Final answer
    x = 15,023.07

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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.