Home / 20,407,525.40-28,161,322.14-12,672,401.72

Finding the Fourth Proportional to 20,407,525.40, 28,161,322.14 and 12,672,401.72

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Solution

The fourth proportional to 20,407,525.40, 28,161,322.14 and 12,672,401.72 is: 17,487,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,525.40 : 28,161,322.14 = 12,672,401.72 : x
  2. Step 2: Convert to fraction form
    20,407,525.40/28,161,322.14 = 12,672,401.72/x
  3. Step 3: Cross multiply
    20,407,525.40x = 28,161,322.14 × 12,672,401.72
  4. Step 4: Simplify right side
    20,407,525.40x = 356,871,587,124,410.12
  5. Step 5: Solve for x
    x = 356,871,587,124,410.12/20,407,525.40
  6. Step 6: Final answer
    x = 17,487,254.34

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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.