Home / 20,550,660.90-28,358,720.30-11,256,612.96

Finding the Fourth Proportional to 20,550,660.90, 28,358,720.30 and 11,256,612.96

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Solution

The fourth proportional to 20,550,660.90, 28,358,720.30 and 11,256,612.96 is: 15,533,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550,660.90 : 28,358,720.30 = 11,256,612.96 : x
  2. Step 2: Convert to fraction form
    20,550,660.90/28,358,720.30 = 11,256,612.96/x
  3. Step 3: Cross multiply
    20,550,660.90x = 28,358,720.30 × 11,256,612.96
  4. Step 4: Simplify right side
    20,550,660.90x = 319,223,138,457,995.12
  5. Step 5: Solve for x
    x = 319,223,138,457,995.12/20,550,660.90
  6. Step 6: Final answer
    x = 15,533,473.11

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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.