Home / 28,403.49-39,197.09-15,656.93

Finding the Fourth Proportional to 28,403.49, 39,197.09 and 15,656.93

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Solution

The fourth proportional to 28,403.49, 39,197.09 and 15,656.93 is: 21,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.49 : 39,197.09 = 15,656.93 : x
  2. Step 2: Convert to fraction form
    28,403.49/39,197.09 = 15,656.93/x
  3. Step 3: Cross multiply
    28,403.49x = 39,197.09 × 15,656.93
  4. Step 4: Simplify right side
    28,403.49x = 613,705,820.06
  5. Step 5: Solve for x
    x = 613,705,820.06/28,403.49
  6. Step 6: Final answer
    x = 21,606.70

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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.