Home / 21,300.60-31,929.02-9,621.96

Finding the Fourth Proportional to 21,300.60, 31,929.02 and 9,621.96

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Solution

The fourth proportional to 21,300.60, 31,929.02 and 9,621.96 is: 14,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.60 : 31,929.02 = 9,621.96 : x
  2. Step 2: Convert to fraction form
    21,300.60/31,929.02 = 9,621.96/x
  3. Step 3: Cross multiply
    21,300.60x = 31,929.02 × 9,621.96
  4. Step 4: Simplify right side
    21,300.60x = 307,219,753.28
  5. Step 5: Solve for x
    x = 307,219,753.28/21,300.60
  6. Step 6: Final answer
    x = 14,423.06

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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.