Home / 15,423.51-21,284.49-8,349.92

Finding the Fourth Proportional to 15,423.51, 21,284.49 and 8,349.92

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Solution

The fourth proportional to 15,423.51, 21,284.49 and 8,349.92 is: 11,522.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.51 : 21,284.49 = 8,349.92 : x
  2. Step 2: Convert to fraction form
    15,423.51/21,284.49 = 8,349.92/x
  3. Step 3: Cross multiply
    15,423.51x = 21,284.49 × 8,349.92
  4. Step 4: Simplify right side
    15,423.51x = 177,723,788.74
  5. Step 5: Solve for x
    x = 177,723,788.74/15,423.51
  6. Step 6: Final answer
    x = 11,522.91

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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.