Home / 21,070.10-31,606.78-6,277.88

Finding the Fourth Proportional to 21,070.10, 31,606.78 and 6,277.88

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Solution

The fourth proportional to 21,070.10, 31,606.78 and 6,277.88 is: 9,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.10 : 31,606.78 = 6,277.88 : x
  2. Step 2: Convert to fraction form
    21,070.10/31,606.78 = 6,277.88/x
  3. Step 3: Cross multiply
    21,070.10x = 31,606.78 × 6,277.88
  4. Step 4: Simplify right side
    21,070.10x = 198,423,572.03
  5. Step 5: Solve for x
    x = 198,423,572.03/21,070.10
  6. Step 6: Final answer
    x = 9,417.31

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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.