Home / 15,813.18-21,777.75-15,468.72

Finding the Fourth Proportional to 15,813.18, 21,777.75 and 15,468.72

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Solution

The fourth proportional to 15,813.18, 21,777.75 and 15,468.72 is: 21,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.18 : 21,777.75 = 15,468.72 : x
  2. Step 2: Convert to fraction form
    15,813.18/21,777.75 = 15,468.72/x
  3. Step 3: Cross multiply
    15,813.18x = 21,777.75 × 15,468.72
  4. Step 4: Simplify right side
    15,813.18x = 336,873,916.98
  5. Step 5: Solve for x
    x = 336,873,916.98/15,813.18
  6. Step 6: Final answer
    x = 21,303.36

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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.