Home / 13,120,870.60-19,681,305.90-7,381,307.80

Finding the Fourth Proportional to 13,120,870.60, 19,681,305.90 and 7,381,307.80

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Solution

The fourth proportional to 13,120,870.60, 19,681,305.90 and 7,381,307.80 is: 11,071,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,870.60 : 19,681,305.90 = 7,381,307.80 : x
  2. Step 2: Convert to fraction form
    13,120,870.60/19,681,305.90 = 7,381,307.80/x
  3. Step 3: Cross multiply
    13,120,870.60x = 19,681,305.90 × 7,381,307.80
  4. Step 4: Simplify right side
    13,120,870.60x = 145,273,776,753,856
  5. Step 5: Solve for x
    x = 145,273,776,753,856/13,120,870.60
  6. Step 6: Final answer
    x = 11,071,961.70

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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.