Home / 19,888.99-29,841.59-12,781.19

Finding the Fourth Proportional to 19,888.99, 29,841.59 and 12,781.19

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Solution

The fourth proportional to 19,888.99, 29,841.59 and 12,781.19 is: 19,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.99 : 29,841.59 = 12,781.19 : x
  2. Step 2: Convert to fraction form
    19,888.99/29,841.59 = 12,781.19/x
  3. Step 3: Cross multiply
    19,888.99x = 29,841.59 × 12,781.19
  4. Step 4: Simplify right side
    19,888.99x = 381,411,102.30
  5. Step 5: Solve for x
    x = 381,411,102.30/19,888.99
  6. Step 6: Final answer
    x = 19,176.99

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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.