Home / 28,270.86-42,407.19-14,223.21

Finding the Fourth Proportional to 28,270.86, 42,407.19 and 14,223.21

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Solution

The fourth proportional to 28,270.86, 42,407.19 and 14,223.21 is: 21,335.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.86 : 42,407.19 = 14,223.21 : x
  2. Step 2: Convert to fraction form
    28,270.86/42,407.19 = 14,223.21/x
  3. Step 3: Cross multiply
    28,270.86x = 42,407.19 × 14,223.21
  4. Step 4: Simplify right side
    28,270.86x = 603,166,368.88
  5. Step 5: Solve for x
    x = 603,166,368.88/28,270.86
  6. Step 6: Final answer
    x = 21,335.27

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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.