Home / 27,931.86-38,540.45-15,667.67

Finding the Fourth Proportional to 27,931.86, 38,540.45 and 15,667.67

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Solution

The fourth proportional to 27,931.86, 38,540.45 and 15,667.67 is: 21,618.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.86 : 38,540.45 = 15,667.67 : x
  2. Step 2: Convert to fraction form
    27,931.86/38,540.45 = 15,667.67/x
  3. Step 3: Cross multiply
    27,931.86x = 38,540.45 × 15,667.67
  4. Step 4: Simplify right side
    27,931.86x = 603,839,187.77
  5. Step 5: Solve for x
    x = 603,839,187.77/27,931.86
  6. Step 6: Final answer
    x = 21,618.29

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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.