Home / 28,099.84-38,777.40-15,524.80

Finding the Fourth Proportional to 28,099.84, 38,777.40 and 15,524.80

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Solution

The fourth proportional to 28,099.84, 38,777.40 and 15,524.80 is: 21,424.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.84 : 38,777.40 = 15,524.80 : x
  2. Step 2: Convert to fraction form
    28,099.84/38,777.40 = 15,524.80/x
  3. Step 3: Cross multiply
    28,099.84x = 38,777.40 × 15,524.80
  4. Step 4: Simplify right side
    28,099.84x = 602,011,379.52
  5. Step 5: Solve for x
    x = 602,011,379.52/28,099.84
  6. Step 6: Final answer
    x = 21,424.01

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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.