Home / 31,461.50-47,208.67-12,755.36

Finding the Fourth Proportional to 31,461.50, 47,208.67 and 12,755.36

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Solution

The fourth proportional to 31,461.50, 47,208.67 and 12,755.36 is: 19,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,461.50 : 47,208.67 = 12,755.36 : x
  2. Step 2: Convert to fraction form
    31,461.50/47,208.67 = 12,755.36/x
  3. Step 3: Cross multiply
    31,461.50x = 47,208.67 × 12,755.36
  4. Step 4: Simplify right side
    31,461.50x = 602,163,667.10
  5. Step 5: Solve for x
    x = 602,163,667.10/31,461.50
  6. Step 6: Final answer
    x = 19,139.70

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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.