Home / 10,333.45-15,390.79-10,283.09

Finding the Fourth Proportional to 10,333.45, 15,390.79 and 10,283.09

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Solution

The fourth proportional to 10,333.45, 15,390.79 and 10,283.09 is: 15,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,333.45 : 15,390.79 = 10,283.09 : x
  2. Step 2: Convert to fraction form
    10,333.45/15,390.79 = 10,283.09/x
  3. Step 3: Cross multiply
    10,333.45x = 15,390.79 × 10,283.09
  4. Step 4: Simplify right side
    10,333.45x = 158,264,878.74
  5. Step 5: Solve for x
    x = 158,264,878.74/10,333.45
  6. Step 6: Final answer
    x = 15,315.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.