Home / 20,588.40-28,393.20-14,961.60

Finding the Fourth Proportional to 20,588.40, 28,393.20 and 14,961.60

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Solution

The fourth proportional to 20,588.40, 28,393.20 and 14,961.60 is: 20,633.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.40 : 28,393.20 = 14,961.60 : x
  2. Step 2: Convert to fraction form
    20,588.40/28,393.20 = 14,961.60/x
  3. Step 3: Cross multiply
    20,588.40x = 28,393.20 × 14,961.60
  4. Step 4: Simplify right side
    20,588.40x = 424,807,701.12
  5. Step 5: Solve for x
    x = 424,807,701.12/20,588.40
  6. Step 6: Final answer
    x = 20,633.35

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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.