Home / 10,420.41-14,386.89-9,299.43

Finding the Fourth Proportional to 10,420.41, 14,386.89 and 9,299.43

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Solution

The fourth proportional to 10,420.41, 14,386.89 and 9,299.43 is: 12,839.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.41 : 14,386.89 = 9,299.43 : x
  2. Step 2: Convert to fraction form
    10,420.41/14,386.89 = 9,299.43/x
  3. Step 3: Cross multiply
    10,420.41x = 14,386.89 × 9,299.43
  4. Step 4: Simplify right side
    10,420.41x = 133,789,876.47
  5. Step 5: Solve for x
    x = 133,789,876.47/10,420.41
  6. Step 6: Final answer
    x = 12,839.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.