Home / 31,586.79-47,380.08-12,862.67

Finding the Fourth Proportional to 31,586.79, 47,380.08 and 12,862.67

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Solution

The fourth proportional to 31,586.79, 47,380.08 and 12,862.67 is: 19,293.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,586.79 : 47,380.08 = 12,862.67 : x
  2. Step 2: Convert to fraction form
    31,586.79/47,380.08 = 12,862.67/x
  3. Step 3: Cross multiply
    31,586.79x = 47,380.08 × 12,862.67
  4. Step 4: Simplify right side
    31,586.79x = 609,434,144.95
  5. Step 5: Solve for x
    x = 609,434,144.95/31,586.79
  6. Step 6: Final answer
    x = 19,293.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.