Home / 12,975.25-19,412.28-9,864.25

Finding the Fourth Proportional to 12,975.25, 19,412.28 and 9,864.25

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Solution

The fourth proportional to 12,975.25, 19,412.28 and 9,864.25 is: 14,757.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.25 : 19,412.28 = 9,864.25 : x
  2. Step 2: Convert to fraction form
    12,975.25/19,412.28 = 9,864.25/x
  3. Step 3: Cross multiply
    12,975.25x = 19,412.28 × 9,864.25
  4. Step 4: Simplify right side
    12,975.25x = 191,487,582.99
  5. Step 5: Solve for x
    x = 191,487,582.99/12,975.25
  6. Step 6: Final answer
    x = 14,757.91

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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.