Home / 15,127.77-20,874.73-8,412.31

Finding the Fourth Proportional to 15,127.77, 20,874.73 and 8,412.31

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Solution

The fourth proportional to 15,127.77, 20,874.73 and 8,412.31 is: 11,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.77 : 20,874.73 = 8,412.31 : x
  2. Step 2: Convert to fraction form
    15,127.77/20,874.73 = 8,412.31/x
  3. Step 3: Cross multiply
    15,127.77x = 20,874.73 × 8,412.31
  4. Step 4: Simplify right side
    15,127.77x = 175,604,699.93
  5. Step 5: Solve for x
    x = 175,604,699.93/15,127.77
  6. Step 6: Final answer
    x = 11,608.10

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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.