Home / 28,356.39-39,129.93-15,607.08

Finding the Fourth Proportional to 28,356.39, 39,129.93 and 15,607.08

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Solution

The fourth proportional to 28,356.39, 39,129.93 and 15,607.08 is: 21,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.39 : 39,129.93 = 15,607.08 : x
  2. Step 2: Convert to fraction form
    28,356.39/39,129.93 = 15,607.08/x
  3. Step 3: Cross multiply
    28,356.39x = 39,129.93 × 15,607.08
  4. Step 4: Simplify right side
    28,356.39x = 610,703,947.90
  5. Step 5: Solve for x
    x = 610,703,947.90/28,356.39
  6. Step 6: Final answer
    x = 21,536.73

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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.