Home / 20,579,175.79-30,871,586.91-11,947,328.35

Finding the Fourth Proportional to 20,579,175.79, 30,871,586.91 and 11,947,328.35

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Solution

The fourth proportional to 20,579,175.79, 30,871,586.91 and 11,947,328.35 is: 17,922,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579,175.79 : 30,871,586.91 = 11,947,328.35 : x
  2. Step 2: Convert to fraction form
    20,579,175.79/30,871,586.91 = 11,947,328.35/x
  3. Step 3: Cross multiply
    20,579,175.79x = 30,871,586.91 × 11,947,328.35
  4. Step 4: Simplify right side
    20,579,175.79x = 368,832,985,499,331.88
  5. Step 5: Solve for x
    x = 368,832,985,499,331.88/20,579,175.79
  6. Step 6: Final answer
    x = 17,922,631.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.