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Finding the Fourth Proportional to 17,368.80, 23,968.50 and 9,815.91

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Solution

The fourth proportional to 17,368.80, 23,968.50 and 9,815.91 is: 13,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,368.80 : 23,968.50 = 9,815.91 : x
  2. Step 2: Convert to fraction form
    17,368.80/23,968.50 = 9,815.91/x
  3. Step 3: Cross multiply
    17,368.80x = 23,968.50 × 9,815.91
  4. Step 4: Simplify right side
    17,368.80x = 235,272,638.84
  5. Step 5: Solve for x
    x = 235,272,638.84/17,368.80
  6. Step 6: Final answer
    x = 13,545.70

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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.