Home / 21,152.80-31,730.28-5,570.02

Finding the Fourth Proportional to 21,152.80, 31,730.28 and 5,570.02

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Solution

The fourth proportional to 21,152.80, 31,730.28 and 5,570.02 is: 8,355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.80 : 31,730.28 = 5,570.02 : x
  2. Step 2: Convert to fraction form
    21,152.80/31,730.28 = 5,570.02/x
  3. Step 3: Cross multiply
    21,152.80x = 31,730.28 × 5,570.02
  4. Step 4: Simplify right side
    21,152.80x = 176,738,294.21
  5. Step 5: Solve for x
    x = 176,738,294.21/21,152.80
  6. Step 6: Final answer
    x = 8,355.31

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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.