Home / 27,900.81-38,503.40-15,154.12

Finding the Fourth Proportional to 27,900.81, 38,503.40 and 15,154.12

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Solution

The fourth proportional to 27,900.81, 38,503.40 and 15,154.12 is: 20,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,900.81 : 38,503.40 = 15,154.12 : x
  2. Step 2: Convert to fraction form
    27,900.81/38,503.40 = 15,154.12/x
  3. Step 3: Cross multiply
    27,900.81x = 38,503.40 × 15,154.12
  4. Step 4: Simplify right side
    27,900.81x = 583,484,985.03
  5. Step 5: Solve for x
    x = 583,484,985.03/27,900.81
  6. Step 6: Final answer
    x = 20,912.83

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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.