Home / 20,868.84-31,293.05-10,326.69

Finding the Fourth Proportional to 20,868.84, 31,293.05 and 10,326.69

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Solution

The fourth proportional to 20,868.84, 31,293.05 and 10,326.69 is: 15,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.84 : 31,293.05 = 10,326.69 : x
  2. Step 2: Convert to fraction form
    20,868.84/31,293.05 = 10,326.69/x
  3. Step 3: Cross multiply
    20,868.84x = 31,293.05 × 10,326.69
  4. Step 4: Simplify right side
    20,868.84x = 323,153,574.87
  5. Step 5: Solve for x
    x = 323,153,574.87/20,868.84
  6. Step 6: Final answer
    x = 15,484.98

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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.