Home / 22,777.93-31,421.68-15,215.77

Finding the Fourth Proportional to 22,777.93, 31,421.68 and 15,215.77

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Solution

The fourth proportional to 22,777.93, 31,421.68 and 15,215.77 is: 20,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,777.93 : 31,421.68 = 15,215.77 : x
  2. Step 2: Convert to fraction form
    22,777.93/31,421.68 = 15,215.77/x
  3. Step 3: Cross multiply
    22,777.93x = 31,421.68 × 15,215.77
  4. Step 4: Simplify right side
    22,777.93x = 478,105,055.89
  5. Step 5: Solve for x
    x = 478,105,055.89/22,777.93
  6. Step 6: Final answer
    x = 20,989.84

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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.