Home / 28,776.96-42,997.44-21,248.64

Finding the Fourth Proportional to 28,776.96, 42,997.44 and 21,248.64

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Solution

The fourth proportional to 28,776.96, 42,997.44 and 21,248.64 is: 31,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.96 : 42,997.44 = 21,248.64 : x
  2. Step 2: Convert to fraction form
    28,776.96/42,997.44 = 21,248.64/x
  3. Step 3: Cross multiply
    28,776.96x = 42,997.44 × 21,248.64
  4. Step 4: Simplify right side
    28,776.96x = 913,637,123.48
  5. Step 5: Solve for x
    x = 913,637,123.48/28,776.96
  6. Step 6: Final answer
    x = 31,748.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.