Home / 10,389.81-14,338.02-5,674.11

Finding the Fourth Proportional to 10,389.81, 14,338.02 and 5,674.11

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Solution

The fourth proportional to 10,389.81, 14,338.02 and 5,674.11 is: 7,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.81 : 14,338.02 = 5,674.11 : x
  2. Step 2: Convert to fraction form
    10,389.81/14,338.02 = 5,674.11/x
  3. Step 3: Cross multiply
    10,389.81x = 14,338.02 × 5,674.11
  4. Step 4: Simplify right side
    10,389.81x = 81,355,502.66
  5. Step 5: Solve for x
    x = 81,355,502.66/10,389.81
  6. Step 6: Final answer
    x = 7,830.32

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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.