Home / 28,102.36-42,117.20-21,026.86

Finding the Fourth Proportional to 28,102.36, 42,117.20 and 21,026.86

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Solution

The fourth proportional to 28,102.36, 42,117.20 and 21,026.86 is: 31,513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.36 : 42,117.20 = 21,026.86 : x
  2. Step 2: Convert to fraction form
    28,102.36/42,117.20 = 21,026.86/x
  3. Step 3: Cross multiply
    28,102.36x = 42,117.20 × 21,026.86
  4. Step 4: Simplify right side
    28,102.36x = 885,592,152.27
  5. Step 5: Solve for x
    x = 885,592,152.27/28,102.36
  6. Step 6: Final answer
    x = 31,513.09

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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.