Home / 19,515.72-26,916.90-16,831.68

Finding the Fourth Proportional to 19,515.72, 26,916.90 and 16,831.68

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Solution

The fourth proportional to 19,515.72, 26,916.90 and 16,831.68 is: 23,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.72 : 26,916.90 = 16,831.68 : x
  2. Step 2: Convert to fraction form
    19,515.72/26,916.90 = 16,831.68/x
  3. Step 3: Cross multiply
    19,515.72x = 26,916.90 × 16,831.68
  4. Step 4: Simplify right side
    19,515.72x = 453,056,647.39
  5. Step 5: Solve for x
    x = 453,056,647.39/19,515.72
  6. Step 6: Final answer
    x = 23,214.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.