Home / 20,439,362.48-30,671,807.64-13,620,720.21

Finding the Fourth Proportional to 20,439,362.48, 30,671,807.64 and 13,620,720.21

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Solution

The fourth proportional to 20,439,362.48, 30,671,807.64 and 13,620,720.21 is: 20,439,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439,362.48 : 30,671,807.64 = 13,620,720.21 : x
  2. Step 2: Convert to fraction form
    20,439,362.48/30,671,807.64 = 13,620,720.21/x
  3. Step 3: Cross multiply
    20,439,362.48x = 30,671,807.64 × 13,620,720.21
  4. Step 4: Simplify right side
    20,439,362.48x = 417,772,110,199,380.44
  5. Step 5: Solve for x
    x = 417,772,110,199,380.44/20,439,362.48
  6. Step 6: Final answer
    x = 20,439,586.15

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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.