Home / 20,995.64-28,973.48-12,042.60

Finding the Fourth Proportional to 20,995.64, 28,973.48 and 12,042.60

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Solution

The fourth proportional to 20,995.64, 28,973.48 and 12,042.60 is: 16,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.64 : 28,973.48 = 12,042.60 : x
  2. Step 2: Convert to fraction form
    20,995.64/28,973.48 = 12,042.60/x
  3. Step 3: Cross multiply
    20,995.64x = 28,973.48 × 12,042.60
  4. Step 4: Simplify right side
    20,995.64x = 348,916,030.25
  5. Step 5: Solve for x
    x = 348,916,030.25/20,995.64
  6. Step 6: Final answer
    x = 16,618.50

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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.