Home / 20,146,789-27,802,302.88-11,205,838.90

Finding the Fourth Proportional to 20,146,789, 27,802,302.88 and 11,205,838.90

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Solution

The fourth proportional to 20,146,789, 27,802,302.88 and 11,205,838.90 is: 15,463,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146,789 : 27,802,302.88 = 11,205,838.90 : x
  2. Step 2: Convert to fraction form
    20,146,789/27,802,302.88 = 11,205,838.90/x
  3. Step 3: Cross multiply
    20,146,789x = 27,802,302.88 × 11,205,838.90
  4. Step 4: Simplify right side
    20,146,789x = 311,548,127,122,286
  5. Step 5: Solve for x
    x = 311,548,127,122,286/20,146,789
  6. Step 6: Final answer
    x = 15,463,909.76

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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.