Home / 22,493.45-31,040.79-12,421.81

Finding the Fourth Proportional to 22,493.45, 31,040.79 and 12,421.81

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Solution

The fourth proportional to 22,493.45, 31,040.79 and 12,421.81 is: 17,142.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,493.45 : 31,040.79 = 12,421.81 : x
  2. Step 2: Convert to fraction form
    22,493.45/31,040.79 = 12,421.81/x
  3. Step 3: Cross multiply
    22,493.45x = 31,040.79 × 12,421.81
  4. Step 4: Simplify right side
    22,493.45x = 385,582,795.63
  5. Step 5: Solve for x
    x = 385,582,795.63/22,493.45
  6. Step 6: Final answer
    x = 17,142.00

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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.