Home / 21,070.06-31,605.08-6,278.60

Finding the Fourth Proportional to 21,070.06, 31,605.08 and 6,278.60

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Solution

The fourth proportional to 21,070.06, 31,605.08 and 6,278.60 is: 9,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.06 : 31,605.08 = 6,278.60 : x
  2. Step 2: Convert to fraction form
    21,070.06/31,605.08 = 6,278.60/x
  3. Step 3: Cross multiply
    21,070.06x = 31,605.08 × 6,278.60
  4. Step 4: Simplify right side
    21,070.06x = 198,435,655.29
  5. Step 5: Solve for x
    x = 198,435,655.29/21,070.06
  6. Step 6: Final answer
    x = 9,417.90

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1.5x scale

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.