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Finding the Fourth Proportional to 19,605.31, 29,407.97 and 7,123.01

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Solution

The fourth proportional to 19,605.31, 29,407.97 and 7,123.01 is: 10,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.31 : 29,407.97 = 7,123.01 : x
  2. Step 2: Convert to fraction form
    19,605.31/29,407.97 = 7,123.01/x
  3. Step 3: Cross multiply
    19,605.31x = 29,407.97 × 7,123.01
  4. Step 4: Simplify right side
    19,605.31x = 209,473,264.39
  5. Step 5: Solve for x
    x = 209,473,264.39/19,605.31
  6. Step 6: Final answer
    x = 10,684.52

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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.