Home / 10,905.60-16,435.20-10,214.40

Finding the Fourth Proportional to 10,905.60, 16,435.20 and 10,214.40

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Solution

The fourth proportional to 10,905.60, 16,435.20 and 10,214.40 is: 15,393.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.60 : 16,435.20 = 10,214.40 : x
  2. Step 2: Convert to fraction form
    10,905.60/16,435.20 = 10,214.40/x
  3. Step 3: Cross multiply
    10,905.60x = 16,435.20 × 10,214.40
  4. Step 4: Simplify right side
    10,905.60x = 167,875,706.88
  5. Step 5: Solve for x
    x = 167,875,706.88/10,905.60
  6. Step 6: Final answer
    x = 15,393.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.