Home / 31,032.86-42,828.50-18,289.99

Finding the Fourth Proportional to 31,032.86, 42,828.50 and 18,289.99

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Solution

The fourth proportional to 31,032.86, 42,828.50 and 18,289.99 is: 25,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,032.86 : 42,828.50 = 18,289.99 : x
  2. Step 2: Convert to fraction form
    31,032.86/42,828.50 = 18,289.99/x
  3. Step 3: Cross multiply
    31,032.86x = 42,828.50 × 18,289.99
  4. Step 4: Simplify right side
    31,032.86x = 783,332,638.19
  5. Step 5: Solve for x
    x = 783,332,638.19/31,032.86
  6. Step 6: Final answer
    x = 25,242.04

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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.