Home / 15,458.24-21,331.80-8,384.51

Finding the Fourth Proportional to 15,458.24, 21,331.80 and 8,384.51

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Solution

The fourth proportional to 15,458.24, 21,331.80 and 8,384.51 is: 11,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.24 : 21,331.80 = 8,384.51 : x
  2. Step 2: Convert to fraction form
    15,458.24/21,331.80 = 8,384.51/x
  3. Step 3: Cross multiply
    15,458.24x = 21,331.80 × 8,384.51
  4. Step 4: Simplify right side
    15,458.24x = 178,856,690.42
  5. Step 5: Solve for x
    x = 178,856,690.42/15,458.24
  6. Step 6: Final answer
    x = 11,570.31

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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.