Home / 10,688.96-14,749.76-6,439.36

Finding the Fourth Proportional to 10,688.96, 14,749.76 and 6,439.36

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Solution

The fourth proportional to 10,688.96, 14,749.76 and 6,439.36 is: 8,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,688.96 : 14,749.76 = 6,439.36 : x
  2. Step 2: Convert to fraction form
    10,688.96/14,749.76 = 6,439.36/x
  3. Step 3: Cross multiply
    10,688.96x = 14,749.76 × 6,439.36
  4. Step 4: Simplify right side
    10,688.96x = 94,979,014.55
  5. Step 5: Solve for x
    x = 94,979,014.55/10,688.96
  6. Step 6: Final answer
    x = 8,885.71

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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.