Home / 21,512.19-29,683.65-12,078.93

Finding the Fourth Proportional to 21,512.19, 29,683.65 and 12,078.93

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Solution

The fourth proportional to 21,512.19, 29,683.65 and 12,078.93 is: 16,667.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.19 : 29,683.65 = 12,078.93 : x
  2. Step 2: Convert to fraction form
    21,512.19/29,683.65 = 12,078.93/x
  3. Step 3: Cross multiply
    21,512.19x = 29,683.65 × 12,078.93
  4. Step 4: Simplify right side
    21,512.19x = 358,546,730.49
  5. Step 5: Solve for x
    x = 358,546,730.49/21,512.19
  6. Step 6: Final answer
    x = 16,667.14

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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.