Home / 13,191.32-19,711.27-12,945.08

Finding the Fourth Proportional to 13,191.32, 19,711.27 and 12,945.08

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Solution

The fourth proportional to 13,191.32, 19,711.27 and 12,945.08 is: 19,343.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.32 : 19,711.27 = 12,945.08 : x
  2. Step 2: Convert to fraction form
    13,191.32/19,711.27 = 12,945.08/x
  3. Step 3: Cross multiply
    13,191.32x = 19,711.27 × 12,945.08
  4. Step 4: Simplify right side
    13,191.32x = 255,163,967.05
  5. Step 5: Solve for x
    x = 255,163,967.05/13,191.32
  6. Step 6: Final answer
    x = 19,343.32

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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.