Home / 30,977.71-42,750.12-16,831.42

Finding the Fourth Proportional to 30,977.71, 42,750.12 and 16,831.42

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Solution

The fourth proportional to 30,977.71, 42,750.12 and 16,831.42 is: 23,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.71 : 42,750.12 = 16,831.42 : x
  2. Step 2: Convert to fraction form
    30,977.71/42,750.12 = 16,831.42/x
  3. Step 3: Cross multiply
    30,977.71x = 42,750.12 × 16,831.42
  4. Step 4: Simplify right side
    30,977.71x = 719,545,224.77
  5. Step 5: Solve for x
    x = 719,545,224.77/30,977.71
  6. Step 6: Final answer
    x = 23,227.84

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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.