Home / 21,715.67-29,968.31-12,283.63

Finding the Fourth Proportional to 21,715.67, 29,968.31 and 12,283.63

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Solution

The fourth proportional to 21,715.67, 29,968.31 and 12,283.63 is: 16,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.67 : 29,968.31 = 12,283.63 : x
  2. Step 2: Convert to fraction form
    21,715.67/29,968.31 = 12,283.63/x
  3. Step 3: Cross multiply
    21,715.67x = 29,968.31 × 12,283.63
  4. Step 4: Simplify right side
    21,715.67x = 368,119,631.77
  5. Step 5: Solve for x
    x = 368,119,631.77/21,715.67
  6. Step 6: Final answer
    x = 16,951.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.