Home / 19,511.50-26,937.47-12,808.86

Finding the Fourth Proportional to 19,511.50, 26,937.47 and 12,808.86

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Solution

The fourth proportional to 19,511.50, 26,937.47 and 12,808.86 is: 17,683.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.50 : 26,937.47 = 12,808.86 : x
  2. Step 2: Convert to fraction form
    19,511.50/26,937.47 = 12,808.86/x
  3. Step 3: Cross multiply
    19,511.50x = 26,937.47 × 12,808.86
  4. Step 4: Simplify right side
    19,511.50x = 345,038,281.98
  5. Step 5: Solve for x
    x = 345,038,281.98/19,511.50
  6. Step 6: Final answer
    x = 17,683.84

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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.