Home / 20,558.30-28,364.19-14,187.02

Finding the Fourth Proportional to 20,558.30, 28,364.19 and 14,187.02

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Solution

The fourth proportional to 20,558.30, 28,364.19 and 14,187.02 is: 19,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.30 : 28,364.19 = 14,187.02 : x
  2. Step 2: Convert to fraction form
    20,558.30/28,364.19 = 14,187.02/x
  3. Step 3: Cross multiply
    20,558.30x = 28,364.19 × 14,187.02
  4. Step 4: Simplify right side
    20,558.30x = 402,403,330.81
  5. Step 5: Solve for x
    x = 402,403,330.81/20,558.30
  6. Step 6: Final answer
    x = 19,573.76

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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.