Home / 12,875.60-19,315.68-4,109.60

Finding the Fourth Proportional to 12,875.60, 19,315.68 and 4,109.60

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Solution

The fourth proportional to 12,875.60, 19,315.68 and 4,109.60 is: 6,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.60 : 19,315.68 = 4,109.60 : x
  2. Step 2: Convert to fraction form
    12,875.60/19,315.68 = 4,109.60/x
  3. Step 3: Cross multiply
    12,875.60x = 19,315.68 × 4,109.60
  4. Step 4: Simplify right side
    12,875.60x = 79,379,718.53
  5. Step 5: Solve for x
    x = 79,379,718.53/12,875.60
  6. Step 6: Final answer
    x = 6,165.13

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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.