Home / 31,353.15-47,038.43-12,628.80

Finding the Fourth Proportional to 31,353.15, 47,038.43 and 12,628.80

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Solution

The fourth proportional to 31,353.15, 47,038.43 and 12,628.80 is: 18,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.15 : 47,038.43 = 12,628.80 : x
  2. Step 2: Convert to fraction form
    31,353.15/47,038.43 = 12,628.80/x
  3. Step 3: Cross multiply
    31,353.15x = 47,038.43 × 12,628.80
  4. Step 4: Simplify right side
    31,353.15x = 594,038,924.78
  5. Step 5: Solve for x
    x = 594,038,924.78/31,353.15
  6. Step 6: Final answer
    x = 18,946.71

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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.