Home / 12,856.20-19,289.10-5,070.44

Finding the Fourth Proportional to 12,856.20, 19,289.10 and 5,070.44

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Solution

The fourth proportional to 12,856.20, 19,289.10 and 5,070.44 is: 7,607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.20 : 19,289.10 = 5,070.44 : x
  2. Step 2: Convert to fraction form
    12,856.20/19,289.10 = 5,070.44/x
  3. Step 3: Cross multiply
    12,856.20x = 19,289.10 × 5,070.44
  4. Step 4: Simplify right side
    12,856.20x = 97,804,224.20
  5. Step 5: Solve for x
    x = 97,804,224.20/12,856.20
  6. Step 6: Final answer
    x = 7,607.55

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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.