Home / 28,507.39-39,338.51-15,759.81

Finding the Fourth Proportional to 28,507.39, 39,338.51 and 15,759.81

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Solution

The fourth proportional to 28,507.39, 39,338.51 and 15,759.81 is: 21,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.39 : 39,338.51 = 15,759.81 : x
  2. Step 2: Convert to fraction form
    28,507.39/39,338.51 = 15,759.81/x
  3. Step 3: Cross multiply
    28,507.39x = 39,338.51 × 15,759.81
  4. Step 4: Simplify right side
    28,507.39x = 619,967,412.91
  5. Step 5: Solve for x
    x = 619,967,412.91/28,507.39
  6. Step 6: Final answer
    x = 21,747.60

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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.