Home / 10,421.64-14,419.24-9,099.18

Finding the Fourth Proportional to 10,421.64, 14,419.24 and 9,099.18

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Solution

The fourth proportional to 10,421.64, 14,419.24 and 9,099.18 is: 12,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.64 : 14,419.24 = 9,099.18 : x
  2. Step 2: Convert to fraction form
    10,421.64/14,419.24 = 9,099.18/x
  3. Step 3: Cross multiply
    10,421.64x = 14,419.24 × 9,099.18
  4. Step 4: Simplify right side
    10,421.64x = 131,203,237.48
  5. Step 5: Solve for x
    x = 131,203,237.48/10,421.64
  6. Step 6: Final answer
    x = 12,589.50

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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.