Home / 15,510.03-21,403.22-8,436.45

Finding the Fourth Proportional to 15,510.03, 21,403.22 and 8,436.45

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Solution

The fourth proportional to 15,510.03, 21,403.22 and 8,436.45 is: 11,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.03 : 21,403.22 = 8,436.45 : x
  2. Step 2: Convert to fraction form
    15,510.03/21,403.22 = 8,436.45/x
  3. Step 3: Cross multiply
    15,510.03x = 21,403.22 × 8,436.45
  4. Step 4: Simplify right side
    15,510.03x = 180,567,195.37
  5. Step 5: Solve for x
    x = 180,567,195.37/15,510.03
  6. Step 6: Final answer
    x = 11,641.96

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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.