Home / 15,391,838.40-21,240,985.48-8,423,121.45

Finding the Fourth Proportional to 15,391,838.40, 21,240,985.48 and 8,423,121.45

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Solution

The fourth proportional to 15,391,838.40, 21,240,985.48 and 8,423,121.45 is: 11,624,043.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391,838.40 : 21,240,985.48 = 8,423,121.45 : x
  2. Step 2: Convert to fraction form
    15,391,838.40/21,240,985.48 = 8,423,121.45/x
  3. Step 3: Cross multiply
    15,391,838.40x = 21,240,985.48 × 8,423,121.45
  4. Step 4: Simplify right side
    15,391,838.40x = 178,915,400,415,726.53
  5. Step 5: Solve for x
    x = 178,915,400,415,726.53/15,391,838.40
  6. Step 6: Final answer
    x = 11,624,043.59

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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.