Home / 20,271.71-30,407.78-15,916.83

Finding the Fourth Proportional to 20,271.71, 30,407.78 and 15,916.83

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Solution

The fourth proportional to 20,271.71, 30,407.78 and 15,916.83 is: 23,875.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.71 : 30,407.78 = 15,916.83 : x
  2. Step 2: Convert to fraction form
    20,271.71/30,407.78 = 15,916.83/x
  3. Step 3: Cross multiply
    20,271.71x = 30,407.78 × 15,916.83
  4. Step 4: Simplify right side
    20,271.71x = 483,995,385.35
  5. Step 5: Solve for x
    x = 483,995,385.35/20,271.71
  6. Step 6: Final answer
    x = 23,875.42

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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.