Home / 12,977,690.24-17,909,328.64-7,176,864.96

Finding the Fourth Proportional to 12,977,690.24, 17,909,328.64 and 7,176,864.96

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Solution

The fourth proportional to 12,977,690.24, 17,909,328.64 and 7,176,864.96 is: 9,904,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977,690.24 : 17,909,328.64 = 7,176,864.96 : x
  2. Step 2: Convert to fraction form
    12,977,690.24/17,909,328.64 = 7,176,864.96/x
  3. Step 3: Cross multiply
    12,977,690.24x = 17,909,328.64 × 7,176,864.96
  4. Step 4: Simplify right side
    12,977,690.24x = 128,532,833,173,540.45
  5. Step 5: Solve for x
    x = 128,532,833,173,540.45/12,977,690.24
  6. Step 6: Final answer
    x = 9,904,137.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.