Home / 31,378.08-47,076.23-12,648.45

Finding the Fourth Proportional to 31,378.08, 47,076.23 and 12,648.45

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Solution

The fourth proportional to 31,378.08, 47,076.23 and 12,648.45 is: 18,976.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.08 : 47,076.23 = 12,648.45 : x
  2. Step 2: Convert to fraction form
    31,378.08/47,076.23 = 12,648.45/x
  3. Step 3: Cross multiply
    31,378.08x = 47,076.23 × 12,648.45
  4. Step 4: Simplify right side
    31,378.08x = 595,441,341.34
  5. Step 5: Solve for x
    x = 595,441,341.34/31,378.08
  6. Step 6: Final answer
    x = 18,976.35

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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.