Home / 27,990,856.40-38,625,996.72-15,601,970.24

Finding the Fourth Proportional to 27,990,856.40, 38,625,996.72 and 15,601,970.24

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Solution

The fourth proportional to 27,990,856.40, 38,625,996.72 and 15,601,970.24 is: 21,529,946.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,990,856.40 : 38,625,996.72 = 15,601,970.24 : x
  2. Step 2: Convert to fraction form
    27,990,856.40/38,625,996.72 = 15,601,970.24/x
  3. Step 3: Cross multiply
    27,990,856.40x = 38,625,996.72 × 15,601,970.24
  4. Step 4: Simplify right side
    27,990,856.40x = 602,641,651,315,777.62
  5. Step 5: Solve for x
    x = 602,641,651,315,777.62/27,990,856.40
  6. Step 6: Final answer
    x = 21,529,946.88

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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.