Home / 20,871,954.64-28,791,095.24-13,124,731.60

Finding the Fourth Proportional to 20,871,954.64, 28,791,095.24 and 13,124,731.60

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Solution

The fourth proportional to 20,871,954.64, 28,791,095.24 and 13,124,731.60 is: 18,104,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871,954.64 : 28,791,095.24 = 13,124,731.60 : x
  2. Step 2: Convert to fraction form
    20,871,954.64/28,791,095.24 = 13,124,731.60/x
  3. Step 3: Cross multiply
    20,871,954.64x = 28,791,095.24 × 13,124,731.60
  4. Step 4: Simplify right side
    20,871,954.64x = 377,875,397,495,037.56
  5. Step 5: Solve for x
    x = 377,875,397,495,037.56/20,871,954.64
  6. Step 6: Final answer
    x = 18,104,456.63

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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.