Home / 31,985.70-47,982.15-9,798.90

Finding the Fourth Proportional to 31,985.70, 47,982.15 and 9,798.90

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Solution

The fourth proportional to 31,985.70, 47,982.15 and 9,798.90 is: 14,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.70 : 47,982.15 = 9,798.90 : x
  2. Step 2: Convert to fraction form
    31,985.70/47,982.15 = 9,798.90/x
  3. Step 3: Cross multiply
    31,985.70x = 47,982.15 × 9,798.90
  4. Step 4: Simplify right side
    31,985.70x = 470,172,289.64
  5. Step 5: Solve for x
    x = 470,172,289.64/31,985.70
  6. Step 6: Final answer
    x = 14,699.45

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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.