Home / 19,924.84-27,490.62-12,855.40

Finding the Fourth Proportional to 19,924.84, 27,490.62 and 12,855.40

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Solution

The fourth proportional to 19,924.84, 27,490.62 and 12,855.40 is: 17,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,924.84 : 27,490.62 = 12,855.40 : x
  2. Step 2: Convert to fraction form
    19,924.84/27,490.62 = 12,855.40/x
  3. Step 3: Cross multiply
    19,924.84x = 27,490.62 × 12,855.40
  4. Step 4: Simplify right side
    19,924.84x = 353,402,916.35
  5. Step 5: Solve for x
    x = 353,402,916.35/19,924.84
  6. Step 6: Final answer
    x = 17,736.80

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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.