Home / 31,492.04-47,240.78-8,118.28

Finding the Fourth Proportional to 31,492.04, 47,240.78 and 8,118.28

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Solution

The fourth proportional to 31,492.04, 47,240.78 and 8,118.28 is: 12,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,492.04 : 47,240.78 = 8,118.28 : x
  2. Step 2: Convert to fraction form
    31,492.04/47,240.78 = 8,118.28/x
  3. Step 3: Cross multiply
    31,492.04x = 47,240.78 × 8,118.28
  4. Step 4: Simplify right side
    31,492.04x = 383,513,879.46
  5. Step 5: Solve for x
    x = 383,513,879.46/31,492.04
  6. Step 6: Final answer
    x = 12,178.12

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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.