Home / 10,401.60-14,357.28-6,428.40

Finding the Fourth Proportional to 10,401.60, 14,357.28 and 6,428.40

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Solution

The fourth proportional to 10,401.60, 14,357.28 and 6,428.40 is: 8,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,401.60 : 14,357.28 = 6,428.40 : x
  2. Step 2: Convert to fraction form
    10,401.60/14,357.28 = 6,428.40/x
  3. Step 3: Cross multiply
    10,401.60x = 14,357.28 × 6,428.40
  4. Step 4: Simplify right side
    10,401.60x = 92,294,338.75
  5. Step 5: Solve for x
    x = 92,294,338.75/10,401.60
  6. Step 6: Final answer
    x = 8,873.09

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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.