Home / 15,547.83-21,456.27-8,474.64

Finding the Fourth Proportional to 15,547.83, 21,456.27 and 8,474.64

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Solution

The fourth proportional to 15,547.83, 21,456.27 and 8,474.64 is: 11,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.83 : 21,456.27 = 8,474.64 : x
  2. Step 2: Convert to fraction form
    15,547.83/21,456.27 = 8,474.64/x
  3. Step 3: Cross multiply
    15,547.83x = 21,456.27 × 8,474.64
  4. Step 4: Simplify right side
    15,547.83x = 181,834,163.99
  5. Step 5: Solve for x
    x = 181,834,163.99/15,547.83
  6. Step 6: Final answer
    x = 11,695.15

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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.