Home / 21,065.92-31,598.88-6,280

Finding the Fourth Proportional to 21,065.92, 31,598.88 and 6,280

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Solution

The fourth proportional to 21,065.92, 31,598.88 and 6,280 is: 9,420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.92 : 31,598.88 = 6,280 : x
  2. Step 2: Convert to fraction form
    21,065.92/31,598.88 = 6,280/x
  3. Step 3: Cross multiply
    21,065.92x = 31,598.88 × 6,280
  4. Step 4: Simplify right side
    21,065.92x = 198,440,966.40
  5. Step 5: Solve for x
    x = 198,440,966.40/21,065.92
  6. Step 6: Final answer
    x = 9,420.00

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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.