Home / 21,006.60-31,522.32-12,703.56

Finding the Fourth Proportional to 21,006.60, 31,522.32 and 12,703.56

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Solution

The fourth proportional to 21,006.60, 31,522.32 and 12,703.56 is: 19,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.60 : 31,522.32 = 12,703.56 : x
  2. Step 2: Convert to fraction form
    21,006.60/31,522.32 = 12,703.56/x
  3. Step 3: Cross multiply
    21,006.60x = 31,522.32 × 12,703.56
  4. Step 4: Simplify right side
    21,006.60x = 400,445,683.46
  5. Step 5: Solve for x
    x = 400,445,683.46/21,006.60
  6. Step 6: Final answer
    x = 19,062.85

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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.