Home / 18,315.05-25,274.73-9,931.55

Finding the Fourth Proportional to 18,315.05, 25,274.73 and 9,931.55

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Solution

The fourth proportional to 18,315.05, 25,274.73 and 9,931.55 is: 13,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.05 : 25,274.73 = 9,931.55 : x
  2. Step 2: Convert to fraction form
    18,315.05/25,274.73 = 9,931.55/x
  3. Step 3: Cross multiply
    18,315.05x = 25,274.73 × 9,931.55
  4. Step 4: Simplify right side
    18,315.05x = 251,017,244.73
  5. Step 5: Solve for x
    x = 251,017,244.73/18,315.05
  6. Step 6: Final answer
    x = 13,705.52

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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.