Home / 13,165,979.40-19,748,969.10-12,977,022.60

Finding the Fourth Proportional to 13,165,979.40, 19,748,969.10 and 12,977,022.60

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Solution

The fourth proportional to 13,165,979.40, 19,748,969.10 and 12,977,022.60 is: 19,465,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165,979.40 : 19,748,969.10 = 12,977,022.60 : x
  2. Step 2: Convert to fraction form
    13,165,979.40/19,748,969.10 = 12,977,022.60/x
  3. Step 3: Cross multiply
    13,165,979.40x = 19,748,969.10 × 12,977,022.60
  4. Step 4: Simplify right side
    13,165,979.40x = 256,282,818,337,401.69
  5. Step 5: Solve for x
    x = 256,282,818,337,401.69/13,165,979.40
  6. Step 6: Final answer
    x = 19,465,533.90

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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.