Home / 10,389.93-14,338.13-5,674.21

Finding the Fourth Proportional to 10,389.93, 14,338.13 and 5,674.21

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Solution

The fourth proportional to 10,389.93, 14,338.13 and 5,674.21 is: 7,830.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.93 : 14,338.13 = 5,674.21 : x
  2. Step 2: Convert to fraction form
    10,389.93/14,338.13 = 5,674.21/x
  3. Step 3: Cross multiply
    10,389.93x = 14,338.13 × 5,674.21
  4. Step 4: Simplify right side
    10,389.93x = 81,357,560.63
  5. Step 5: Solve for x
    x = 81,357,560.63/10,389.93
  6. Step 6: Final answer
    x = 7,830.42

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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.