Home / 15,467.77-21,345.51-8,394.20

Finding the Fourth Proportional to 15,467.77, 21,345.51 and 8,394.20

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Solution

The fourth proportional to 15,467.77, 21,345.51 and 8,394.20 is: 11,583.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,467.77 : 21,345.51 = 8,394.20 : x
  2. Step 2: Convert to fraction form
    15,467.77/21,345.51 = 8,394.20/x
  3. Step 3: Cross multiply
    15,467.77x = 21,345.51 × 8,394.20
  4. Step 4: Simplify right side
    15,467.77x = 179,178,484.84
  5. Step 5: Solve for x
    x = 179,178,484.84/15,467.77
  6. Step 6: Final answer
    x = 11,583.99

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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.