Home / 31,985.72-47,981.78-9,798.84

Finding the Fourth Proportional to 31,985.72, 47,981.78 and 9,798.84

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Solution

The fourth proportional to 31,985.72, 47,981.78 and 9,798.84 is: 14,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.72 : 47,981.78 = 9,798.84 : x
  2. Step 2: Convert to fraction form
    31,985.72/47,981.78 = 9,798.84/x
  3. Step 3: Cross multiply
    31,985.72x = 47,981.78 × 9,798.84
  4. Step 4: Simplify right side
    31,985.72x = 470,165,785.14
  5. Step 5: Solve for x
    x = 470,165,785.14/31,985.72
  6. Step 6: Final answer
    x = 14,699.24

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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.