Home / 20,622.60-28,444.77-12,968.10

Finding the Fourth Proportional to 20,622.60, 28,444.77 and 12,968.10

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Solution

The fourth proportional to 20,622.60, 28,444.77 and 12,968.10 is: 17,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.60 : 28,444.77 = 12,968.10 : x
  2. Step 2: Convert to fraction form
    20,622.60/28,444.77 = 12,968.10/x
  3. Step 3: Cross multiply
    20,622.60x = 28,444.77 × 12,968.10
  4. Step 4: Simplify right side
    20,622.60x = 368,874,621.84
  5. Step 5: Solve for x
    x = 368,874,621.84/20,622.60
  6. Step 6: Final answer
    x = 17,886.91

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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.