Home / 34,720.24-47,918.70-21,289.12

Finding the Fourth Proportional to 34,720.24, 47,918.70 and 21,289.12

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Solution

The fourth proportional to 34,720.24, 47,918.70 and 21,289.12 is: 29,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.24 : 47,918.70 = 21,289.12 : x
  2. Step 2: Convert to fraction form
    34,720.24/47,918.70 = 21,289.12/x
  3. Step 3: Cross multiply
    34,720.24x = 47,918.70 × 21,289.12
  4. Step 4: Simplify right side
    34,720.24x = 1,020,146,954.54
  5. Step 5: Solve for x
    x = 1,020,146,954.54/34,720.24
  6. Step 6: Final answer
    x = 29,381.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.