Home / 20,916.02-31,372.86-15,299.45

Finding the Fourth Proportional to 20,916.02, 31,372.86 and 15,299.45

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Solution

The fourth proportional to 20,916.02, 31,372.86 and 15,299.45 is: 22,948.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.02 : 31,372.86 = 15,299.45 : x
  2. Step 2: Convert to fraction form
    20,916.02/31,372.86 = 15,299.45/x
  3. Step 3: Cross multiply
    20,916.02x = 31,372.86 × 15,299.45
  4. Step 4: Simplify right side
    20,916.02x = 479,987,502.93
  5. Step 5: Solve for x
    x = 479,987,502.93/20,916.02
  6. Step 6: Final answer
    x = 22,948.32

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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.