Home / 20,759,667.39-31,140,354.02-7,122,191.49

Finding the Fourth Proportional to 20,759,667.39, 31,140,354.02 and 7,122,191.49

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Solution

The fourth proportional to 20,759,667.39, 31,140,354.02 and 7,122,191.49 is: 10,683,579.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759,667.39 : 31,140,354.02 = 7,122,191.49 : x
  2. Step 2: Convert to fraction form
    20,759,667.39/31,140,354.02 = 7,122,191.49/x
  3. Step 3: Cross multiply
    20,759,667.39x = 31,140,354.02 × 7,122,191.49
  4. Step 4: Simplify right side
    20,759,667.39x = 221,787,564,361,220.34
  5. Step 5: Solve for x
    x = 221,787,564,361,220.34/20,759,667.39
  6. Step 6: Final answer
    x = 10,683,579.86

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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.