Home / 21,440.55-29,587.64-12,009.45

Finding the Fourth Proportional to 21,440.55, 29,587.64 and 12,009.45

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Solution

The fourth proportional to 21,440.55, 29,587.64 and 12,009.45 is: 16,572.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.55 : 29,587.64 = 12,009.45 : x
  2. Step 2: Convert to fraction form
    21,440.55/29,587.64 = 12,009.45/x
  3. Step 3: Cross multiply
    21,440.55x = 29,587.64 × 12,009.45
  4. Step 4: Simplify right side
    21,440.55x = 355,331,223.15
  5. Step 5: Solve for x
    x = 355,331,223.15/21,440.55
  6. Step 6: Final answer
    x = 16,572.86

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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.