Home / 15,477.45-21,359.12-8,403.87

Finding the Fourth Proportional to 15,477.45, 21,359.12 and 8,403.87

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Solution

The fourth proportional to 15,477.45, 21,359.12 and 8,403.87 is: 11,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.45 : 21,359.12 = 8,403.87 : x
  2. Step 2: Convert to fraction form
    15,477.45/21,359.12 = 8,403.87/x
  3. Step 3: Cross multiply
    15,477.45x = 21,359.12 × 8,403.87
  4. Step 4: Simplify right side
    15,477.45x = 179,499,267.79
  5. Step 5: Solve for x
    x = 179,499,267.79/15,477.45
  6. Step 6: Final answer
    x = 11,597.47

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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.