Home / 19,581.60-29,361.60-8,486.40

Finding the Fourth Proportional to 19,581.60, 29,361.60 and 8,486.40

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Solution

The fourth proportional to 19,581.60, 29,361.60 and 8,486.40 is: 12,724.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581.60 : 29,361.60 = 8,486.40 : x
  2. Step 2: Convert to fraction form
    19,581.60/29,361.60 = 8,486.40/x
  3. Step 3: Cross multiply
    19,581.60x = 29,361.60 × 8,486.40
  4. Step 4: Simplify right side
    19,581.60x = 249,174,282.24
  5. Step 5: Solve for x
    x = 249,174,282.24/19,581.60
  6. Step 6: Final answer
    x = 12,724.92

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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.