Home / 21,024.72-31,536.96-6,985.80

Finding the Fourth Proportional to 21,024.72, 31,536.96 and 6,985.80

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Solution

The fourth proportional to 21,024.72, 31,536.96 and 6,985.80 is: 10,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.72 : 31,536.96 = 6,985.80 : x
  2. Step 2: Convert to fraction form
    21,024.72/31,536.96 = 6,985.80/x
  3. Step 3: Cross multiply
    21,024.72x = 31,536.96 × 6,985.80
  4. Step 4: Simplify right side
    21,024.72x = 220,310,895.17
  5. Step 5: Solve for x
    x = 220,310,895.17/21,024.72
  6. Step 6: Final answer
    x = 10,478.66

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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.