Home / 10,421.26-14,381.35-5,641.19

Finding the Fourth Proportional to 10,421.26, 14,381.35 and 5,641.19

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Solution

The fourth proportional to 10,421.26, 14,381.35 and 5,641.19 is: 7,784.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.26 : 14,381.35 = 5,641.19 : x
  2. Step 2: Convert to fraction form
    10,421.26/14,381.35 = 5,641.19/x
  3. Step 3: Cross multiply
    10,421.26x = 14,381.35 × 5,641.19
  4. Step 4: Simplify right side
    10,421.26x = 81,127,933.27
  5. Step 5: Solve for x
    x = 81,127,933.27/10,421.26
  6. Step 6: Final answer
    x = 7,784.85

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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.