Home / 15,484.87-21,369.10-8,411.24

Finding the Fourth Proportional to 15,484.87, 21,369.10 and 8,411.24

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Solution

The fourth proportional to 15,484.87, 21,369.10 and 8,411.24 is: 11,607.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,484.87 : 21,369.10 = 8,411.24 : x
  2. Step 2: Convert to fraction form
    15,484.87/21,369.10 = 8,411.24/x
  3. Step 3: Cross multiply
    15,484.87x = 21,369.10 × 8,411.24
  4. Step 4: Simplify right side
    15,484.87x = 179,740,479.78
  5. Step 5: Solve for x
    x = 179,740,479.78/15,484.87
  6. Step 6: Final answer
    x = 11,607.49

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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.