Home / 10,421.39-14,381.61-6,172.69

Finding the Fourth Proportional to 10,421.39, 14,381.61 and 6,172.69

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Solution

The fourth proportional to 10,421.39, 14,381.61 and 6,172.69 is: 8,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.39 : 14,381.61 = 6,172.69 : x
  2. Step 2: Convert to fraction form
    10,421.39/14,381.61 = 6,172.69/x
  3. Step 3: Cross multiply
    10,421.39x = 14,381.61 × 6,172.69
  4. Step 4: Simplify right side
    10,421.39x = 88,773,117.46
  5. Step 5: Solve for x
    x = 88,773,117.46/10,421.39
  6. Step 6: Final answer
    x = 8,518.36

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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.