Home / 15,543.37-21,449.76-8,469.77

Finding the Fourth Proportional to 15,543.37, 21,449.76 and 8,469.77

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Solution

The fourth proportional to 15,543.37, 21,449.76 and 8,469.77 is: 11,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.37 : 21,449.76 = 8,469.77 : x
  2. Step 2: Convert to fraction form
    15,543.37/21,449.76 = 8,469.77/x
  3. Step 3: Cross multiply
    15,543.37x = 21,449.76 × 8,469.77
  4. Step 4: Simplify right side
    15,543.37x = 181,674,533.76
  5. Step 5: Solve for x
    x = 181,674,533.76/15,543.37
  6. Step 6: Final answer
    x = 11,688.23

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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.