Home / 12,875.10-19,311.93-3,640.86

Finding the Fourth Proportional to 12,875.10, 19,311.93 and 3,640.86

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Solution

The fourth proportional to 12,875.10, 19,311.93 and 3,640.86 is: 5,461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.10 : 19,311.93 = 3,640.86 : x
  2. Step 2: Convert to fraction form
    12,875.10/19,311.93 = 3,640.86/x
  3. Step 3: Cross multiply
    12,875.10x = 19,311.93 × 3,640.86
  4. Step 4: Simplify right side
    12,875.10x = 70,312,033.46
  5. Step 5: Solve for x
    x = 70,312,033.46/12,875.10
  6. Step 6: Final answer
    x = 5,461.09

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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.