Home / 21,209.34-29,271.48-12,256.92

Finding the Fourth Proportional to 21,209.34, 29,271.48 and 12,256.92

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Solution

The fourth proportional to 21,209.34, 29,271.48 and 12,256.92 is: 16,916.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.34 : 29,271.48 = 12,256.92 : x
  2. Step 2: Convert to fraction form
    21,209.34/29,271.48 = 12,256.92/x
  3. Step 3: Cross multiply
    21,209.34x = 29,271.48 × 12,256.92
  4. Step 4: Simplify right side
    21,209.34x = 358,778,142.68
  5. Step 5: Solve for x
    x = 358,778,142.68/21,209.34
  6. Step 6: Final answer
    x = 16,916.04

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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.