Home / 21,130.48-31,700.99-6,339.68

Finding the Fourth Proportional to 21,130.48, 31,700.99 and 6,339.68

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Solution

The fourth proportional to 21,130.48, 31,700.99 and 6,339.68 is: 9,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.48 : 31,700.99 = 6,339.68 : x
  2. Step 2: Convert to fraction form
    21,130.48/31,700.99 = 6,339.68/x
  3. Step 3: Cross multiply
    21,130.48x = 31,700.99 × 6,339.68
  4. Step 4: Simplify right side
    21,130.48x = 200,974,132.28
  5. Step 5: Solve for x
    x = 200,974,132.28/21,130.48
  6. Step 6: Final answer
    x = 9,511.10

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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.