Home / 20,669.32-31,005.60-14,160.16

Finding the Fourth Proportional to 20,669.32, 31,005.60 and 14,160.16

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Solution

The fourth proportional to 20,669.32, 31,005.60 and 14,160.16 is: 21,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.32 : 31,005.60 = 14,160.16 : x
  2. Step 2: Convert to fraction form
    20,669.32/31,005.60 = 14,160.16/x
  3. Step 3: Cross multiply
    20,669.32x = 31,005.60 × 14,160.16
  4. Step 4: Simplify right side
    20,669.32x = 439,044,256.90
  5. Step 5: Solve for x
    x = 439,044,256.90/20,669.32
  6. Step 6: Final answer
    x = 21,241.35

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1.5x scale

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.