Home / 13,856.47-20,795.64-6,457.12

Finding the Fourth Proportional to 13,856.47, 20,795.64 and 6,457.12

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Solution

The fourth proportional to 13,856.47, 20,795.64 and 6,457.12 is: 9,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.47 : 20,795.64 = 6,457.12 : x
  2. Step 2: Convert to fraction form
    13,856.47/20,795.64 = 6,457.12/x
  3. Step 3: Cross multiply
    13,856.47x = 20,795.64 × 6,457.12
  4. Step 4: Simplify right side
    13,856.47x = 134,279,866.75
  5. Step 5: Solve for x
    x = 134,279,866.75/13,856.47
  6. Step 6: Final answer
    x = 9,690.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.