Home / 19,478.04-26,878.14-11,520.60

Finding the Fourth Proportional to 19,478.04, 26,878.14 and 11,520.60

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Solution

The fourth proportional to 19,478.04, 26,878.14 and 11,520.60 is: 15,897.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.04 : 26,878.14 = 11,520.60 : x
  2. Step 2: Convert to fraction form
    19,478.04/26,878.14 = 11,520.60/x
  3. Step 3: Cross multiply
    19,478.04x = 26,878.14 × 11,520.60
  4. Step 4: Simplify right side
    19,478.04x = 309,652,299.68
  5. Step 5: Solve for x
    x = 309,652,299.68/19,478.04
  6. Step 6: Final answer
    x = 15,897.51

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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.