Home / 12,869.50-19,303.68-4,975.78

Finding the Fourth Proportional to 12,869.50, 19,303.68 and 4,975.78

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Solution

The fourth proportional to 12,869.50, 19,303.68 and 4,975.78 is: 7,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.50 : 19,303.68 = 4,975.78 : x
  2. Step 2: Convert to fraction form
    12,869.50/19,303.68 = 4,975.78/x
  3. Step 3: Cross multiply
    12,869.50x = 19,303.68 × 4,975.78
  4. Step 4: Simplify right side
    12,869.50x = 96,050,864.87
  5. Step 5: Solve for x
    x = 96,050,864.87/12,869.50
  6. Step 6: Final answer
    x = 7,463.45

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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.