Home / 10,897.96-15,039.04-6,421.90

Finding the Fourth Proportional to 10,897.96, 15,039.04 and 6,421.90

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Solution

The fourth proportional to 10,897.96, 15,039.04 and 6,421.90 is: 8,862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.96 : 15,039.04 = 6,421.90 : x
  2. Step 2: Convert to fraction form
    10,897.96/15,039.04 = 6,421.90/x
  3. Step 3: Cross multiply
    10,897.96x = 15,039.04 × 6,421.90
  4. Step 4: Simplify right side
    10,897.96x = 96,579,103.67
  5. Step 5: Solve for x
    x = 96,579,103.67/10,897.96
  6. Step 6: Final answer
    x = 8,862.13

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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.