Home / 20,751.48-31,127.22-17,777.16

Finding the Fourth Proportional to 20,751.48, 31,127.22 and 17,777.16

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Solution

The fourth proportional to 20,751.48, 31,127.22 and 17,777.16 is: 26,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.48 : 31,127.22 = 17,777.16 : x
  2. Step 2: Convert to fraction form
    20,751.48/31,127.22 = 17,777.16/x
  3. Step 3: Cross multiply
    20,751.48x = 31,127.22 × 17,777.16
  4. Step 4: Simplify right side
    20,751.48x = 553,353,570.30
  5. Step 5: Solve for x
    x = 553,353,570.30/20,751.48
  6. Step 6: Final answer
    x = 26,665.74

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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.