Home / 10,718.48-14,800.20-9,408.08

Finding the Fourth Proportional to 10,718.48, 14,800.20 and 9,408.08

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Solution

The fourth proportional to 10,718.48, 14,800.20 and 9,408.08 is: 12,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,718.48 : 14,800.20 = 9,408.08 : x
  2. Step 2: Convert to fraction form
    10,718.48/14,800.20 = 9,408.08/x
  3. Step 3: Cross multiply
    10,718.48x = 14,800.20 × 9,408.08
  4. Step 4: Simplify right side
    10,718.48x = 139,241,465.62
  5. Step 5: Solve for x
    x = 139,241,465.62/10,718.48
  6. Step 6: Final answer
    x = 12,990.78

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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.