Home / 12,939.26-19,312.88-11,152.67

Finding the Fourth Proportional to 12,939.26, 19,312.88 and 11,152.67

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Solution

The fourth proportional to 12,939.26, 19,312.88 and 11,152.67 is: 16,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.26 : 19,312.88 = 11,152.67 : x
  2. Step 2: Convert to fraction form
    12,939.26/19,312.88 = 11,152.67/x
  3. Step 3: Cross multiply
    12,939.26x = 19,312.88 × 11,152.67
  4. Step 4: Simplify right side
    12,939.26x = 215,390,025.06
  5. Step 5: Solve for x
    x = 215,390,025.06/12,939.26
  6. Step 6: Final answer
    x = 16,646.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.