Home / 21,152.60-31,730.52-5,570

Finding the Fourth Proportional to 21,152.60, 31,730.52 and 5,570

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Solution

The fourth proportional to 21,152.60, 31,730.52 and 5,570 is: 8,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.60 : 31,730.52 = 5,570 : x
  2. Step 2: Convert to fraction form
    21,152.60/31,730.52 = 5,570/x
  3. Step 3: Cross multiply
    21,152.60x = 31,730.52 × 5,570
  4. Step 4: Simplify right side
    21,152.60x = 176,738,996.40
  5. Step 5: Solve for x
    x = 176,738,996.40/21,152.60
  6. Step 6: Final answer
    x = 8,355.43

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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.