Home / 15,490.16-21,376.55-8,416.58

Finding the Fourth Proportional to 15,490.16, 21,376.55 and 8,416.58

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Solution

The fourth proportional to 15,490.16, 21,376.55 and 8,416.58 is: 11,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.16 : 21,376.55 = 8,416.58 : x
  2. Step 2: Convert to fraction form
    15,490.16/21,376.55 = 8,416.58/x
  3. Step 3: Cross multiply
    15,490.16x = 21,376.55 × 8,416.58
  4. Step 4: Simplify right side
    15,490.16x = 179,917,365.82
  5. Step 5: Solve for x
    x = 179,917,365.82/15,490.16
  6. Step 6: Final answer
    x = 11,614.95

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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.