Home / 28,263.60-38,990.16-16,930.08

Finding the Fourth Proportional to 28,263.60, 38,990.16 and 16,930.08

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Solution

The fourth proportional to 28,263.60, 38,990.16 and 16,930.08 is: 23,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.60 : 38,990.16 = 16,930.08 : x
  2. Step 2: Convert to fraction form
    28,263.60/38,990.16 = 16,930.08/x
  3. Step 3: Cross multiply
    28,263.60x = 38,990.16 × 16,930.08
  4. Step 4: Simplify right side
    28,263.60x = 660,106,528.01
  5. Step 5: Solve for x
    x = 660,106,528.01/28,263.60
  6. Step 6: Final answer
    x = 23,355.36

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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.