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Finding the Fourth Proportional to 13,159.99, 19,744.88 and 7,898.77

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Solution

The fourth proportional to 13,159.99, 19,744.88 and 7,898.77 is: 11,851.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.99 : 19,744.88 = 7,898.77 : x
  2. Step 2: Convert to fraction form
    13,159.99/19,744.88 = 7,898.77/x
  3. Step 3: Cross multiply
    13,159.99x = 19,744.88 × 7,898.77
  4. Step 4: Simplify right side
    13,159.99x = 155,960,265.80
  5. Step 5: Solve for x
    x = 155,960,265.80/13,159.99
  6. Step 6: Final answer
    x = 11,851.09

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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.