Home / 20,759,756.80-31,139,635.20-19,584,025.60

Finding the Fourth Proportional to 20,759,756.80, 31,139,635.20 and 19,584,025.60

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Solution

The fourth proportional to 20,759,756.80, 31,139,635.20 and 19,584,025.60 is: 29,376,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759,756.80 : 31,139,635.20 = 19,584,025.60 : x
  2. Step 2: Convert to fraction form
    20,759,756.80/31,139,635.20 = 19,584,025.60/x
  3. Step 3: Cross multiply
    20,759,756.80x = 31,139,635.20 × 19,584,025.60
  4. Step 4: Simplify right side
    20,759,756.80x = 609,839,412,931,461.12
  5. Step 5: Solve for x
    x = 609,839,412,931,461.12/20,759,756.80
  6. Step 6: Final answer
    x = 29,376,038.40

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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.