Home / 19,185.86-28,725.65-9,805.68

Finding the Fourth Proportional to 19,185.86, 28,725.65 and 9,805.68

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Solution

The fourth proportional to 19,185.86, 28,725.65 and 9,805.68 is: 14,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,185.86 : 28,725.65 = 9,805.68 : x
  2. Step 2: Convert to fraction form
    19,185.86/28,725.65 = 9,805.68/x
  3. Step 3: Cross multiply
    19,185.86x = 28,725.65 × 9,805.68
  4. Step 4: Simplify right side
    19,185.86x = 281,674,543.08
  5. Step 5: Solve for x
    x = 281,674,543.08/19,185.86
  6. Step 6: Final answer
    x = 14,681.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.