Home / 18,439.92-25,457.08-11,271.49

Finding the Fourth Proportional to 18,439.92, 25,457.08 and 11,271.49

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Solution

The fourth proportional to 18,439.92, 25,457.08 and 11,271.49 is: 15,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.92 : 25,457.08 = 11,271.49 : x
  2. Step 2: Convert to fraction form
    18,439.92/25,457.08 = 11,271.49/x
  3. Step 3: Cross multiply
    18,439.92x = 25,457.08 × 11,271.49
  4. Step 4: Simplify right side
    18,439.92x = 286,939,166.29
  5. Step 5: Solve for x
    x = 286,939,166.29/18,439.92
  6. Step 6: Final answer
    x = 15,560.76

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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.