Home / 28,410.64-39,208.44-15,663.76

Finding the Fourth Proportional to 28,410.64, 39,208.44 and 15,663.76

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Solution

The fourth proportional to 28,410.64, 39,208.44 and 15,663.76 is: 21,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.64 : 39,208.44 = 15,663.76 : x
  2. Step 2: Convert to fraction form
    28,410.64/39,208.44 = 15,663.76/x
  3. Step 3: Cross multiply
    28,410.64x = 39,208.44 × 15,663.76
  4. Step 4: Simplify right side
    28,410.64x = 614,151,594.13
  5. Step 5: Solve for x
    x = 614,151,594.13/28,410.64
  6. Step 6: Final answer
    x = 21,616.96

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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.