Home / 21,262.59-31,875.39-8,774.82

Finding the Fourth Proportional to 21,262.59, 31,875.39 and 8,774.82

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Solution

The fourth proportional to 21,262.59, 31,875.39 and 8,774.82 is: 13,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.59 : 31,875.39 = 8,774.82 : x
  2. Step 2: Convert to fraction form
    21,262.59/31,875.39 = 8,774.82/x
  3. Step 3: Cross multiply
    21,262.59x = 31,875.39 × 8,774.82
  4. Step 4: Simplify right side
    21,262.59x = 279,700,809.68
  5. Step 5: Solve for x
    x = 279,700,809.68/21,262.59
  6. Step 6: Final answer
    x = 13,154.60

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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.