Home / 28,708.32-43,068.42-9,989.22

Finding the Fourth Proportional to 28,708.32, 43,068.42 and 9,989.22

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Solution

The fourth proportional to 28,708.32, 43,068.42 and 9,989.22 is: 14,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.32 : 43,068.42 = 9,989.22 : x
  2. Step 2: Convert to fraction form
    28,708.32/43,068.42 = 9,989.22/x
  3. Step 3: Cross multiply
    28,708.32x = 43,068.42 × 9,989.22
  4. Step 4: Simplify right side
    28,708.32x = 430,219,922.43
  5. Step 5: Solve for x
    x = 430,219,922.43/28,708.32
  6. Step 6: Final answer
    x = 14,985.90

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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.