Home / 12,010.86-18,024.80-4,220.28

Finding the Fourth Proportional to 12,010.86, 18,024.80 and 4,220.28

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Solution

The fourth proportional to 12,010.86, 18,024.80 and 4,220.28 is: 6,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,010.86 : 18,024.80 = 4,220.28 : x
  2. Step 2: Convert to fraction form
    12,010.86/18,024.80 = 4,220.28/x
  3. Step 3: Cross multiply
    12,010.86x = 18,024.80 × 4,220.28
  4. Step 4: Simplify right side
    12,010.86x = 76,069,681.84
  5. Step 5: Solve for x
    x = 76,069,681.84/12,010.86
  6. Step 6: Final answer
    x = 6,333.41

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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.