Home / 28,707.28-39,622.71-18,111.40

Finding the Fourth Proportional to 28,707.28, 39,622.71 and 18,111.40

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Solution

The fourth proportional to 28,707.28, 39,622.71 and 18,111.40 is: 24,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,707.28 : 39,622.71 = 18,111.40 : x
  2. Step 2: Convert to fraction form
    28,707.28/39,622.71 = 18,111.40/x
  3. Step 3: Cross multiply
    28,707.28x = 39,622.71 × 18,111.40
  4. Step 4: Simplify right side
    28,707.28x = 717,622,749.89
  5. Step 5: Solve for x
    x = 717,622,749.89/28,707.28
  6. Step 6: Final answer
    x = 24,997.94

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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.