Home / 18,671.24-28,006.86-12,810.08

Finding the Fourth Proportional to 18,671.24, 28,006.86 and 12,810.08

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Solution

The fourth proportional to 18,671.24, 28,006.86 and 12,810.08 is: 19,215.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.24 : 28,006.86 = 12,810.08 : x
  2. Step 2: Convert to fraction form
    18,671.24/28,006.86 = 12,810.08/x
  3. Step 3: Cross multiply
    18,671.24x = 28,006.86 × 12,810.08
  4. Step 4: Simplify right side
    18,671.24x = 358,770,117.15
  5. Step 5: Solve for x
    x = 358,770,117.15/18,671.24
  6. Step 6: Final answer
    x = 19,215.12

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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.