Home / 20,358,043.80-28,107,628.68-15,640,036.32

Finding the Fourth Proportional to 20,358,043.80, 28,107,628.68 and 15,640,036.32

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Solution

The fourth proportional to 20,358,043.80, 28,107,628.68 and 15,640,036.32 is: 21,593,643.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358,043.80 : 28,107,628.68 = 15,640,036.32 : x
  2. Step 2: Convert to fraction form
    20,358,043.80/28,107,628.68 = 15,640,036.32/x
  3. Step 3: Cross multiply
    20,358,043.80x = 28,107,628.68 × 15,640,036.32
  4. Step 4: Simplify right side
    20,358,043.80x = 439,604,333,424,273.69
  5. Step 5: Solve for x
    x = 439,604,333,424,273.69/20,358,043.80
  6. Step 6: Final answer
    x = 21,593,643.17

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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.