Home / 13,146,871.60-19,720,307.40-7,478,167.60

Finding the Fourth Proportional to 13,146,871.60, 19,720,307.40 and 7,478,167.60

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Solution

The fourth proportional to 13,146,871.60, 19,720,307.40 and 7,478,167.60 is: 11,217,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,871.60 : 19,720,307.40 = 7,478,167.60 : x
  2. Step 2: Convert to fraction form
    13,146,871.60/19,720,307.40 = 7,478,167.60/x
  3. Step 3: Cross multiply
    13,146,871.60x = 19,720,307.40 × 7,478,167.60
  4. Step 4: Simplify right side
    13,146,871.60x = 147,471,763,860,720.22
  5. Step 5: Solve for x
    x = 147,471,763,860,720.22/13,146,871.60
  6. Step 6: Final answer
    x = 11,217,251.40

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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.