Home / 10,209.68-14,085.60-6,431.84

Finding the Fourth Proportional to 10,209.68, 14,085.60 and 6,431.84

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Solution

The fourth proportional to 10,209.68, 14,085.60 and 6,431.84 is: 8,873.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.68 : 14,085.60 = 6,431.84 : x
  2. Step 2: Convert to fraction form
    10,209.68/14,085.60 = 6,431.84/x
  3. Step 3: Cross multiply
    10,209.68x = 14,085.60 × 6,431.84
  4. Step 4: Simplify right side
    10,209.68x = 90,596,325.50
  5. Step 5: Solve for x
    x = 90,596,325.50/10,209.68
  6. Step 6: Final answer
    x = 8,873.57

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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.