Home / 12,776.77-19,140.54-10,439.42

Finding the Fourth Proportional to 12,776.77, 19,140.54 and 10,439.42

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Solution

The fourth proportional to 12,776.77, 19,140.54 and 10,439.42 is: 15,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.77 : 19,140.54 = 10,439.42 : x
  2. Step 2: Convert to fraction form
    12,776.77/19,140.54 = 10,439.42/x
  3. Step 3: Cross multiply
    12,776.77x = 19,140.54 × 10,439.42
  4. Step 4: Simplify right side
    12,776.77x = 199,816,001.24
  5. Step 5: Solve for x
    x = 199,816,001.24/12,776.77
  6. Step 6: Final answer
    x = 15,639.01

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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.