Home / 15,509.59-21,403.26-8,436.01

Finding the Fourth Proportional to 15,509.59, 21,403.26 and 8,436.01

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Solution

The fourth proportional to 15,509.59, 21,403.26 and 8,436.01 is: 11,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.59 : 21,403.26 = 8,436.01 : x
  2. Step 2: Convert to fraction form
    15,509.59/21,403.26 = 8,436.01/x
  3. Step 3: Cross multiply
    15,509.59x = 21,403.26 × 8,436.01
  4. Step 4: Simplify right side
    15,509.59x = 180,558,115.39
  5. Step 5: Solve for x
    x = 180,558,115.39/15,509.59
  6. Step 6: Final answer
    x = 11,641.71

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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.