Home / 21,094,649.40-31,643,209.79-8,140,867.98

Finding the Fourth Proportional to 21,094,649.40, 31,643,209.79 and 8,140,867.98

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Solution

The fourth proportional to 21,094,649.40, 31,643,209.79 and 8,140,867.98 is: 12,211,778.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094,649.40 : 31,643,209.79 = 8,140,867.98 : x
  2. Step 2: Convert to fraction form
    21,094,649.40/31,643,209.79 = 8,140,867.98/x
  3. Step 3: Cross multiply
    21,094,649.40x = 31,643,209.79 × 8,140,867.98
  4. Step 4: Simplify right side
    21,094,649.40x = 257,603,193,212,095.16
  5. Step 5: Solve for x
    x = 257,603,193,212,095.16/21,094,649.40
  6. Step 6: Final answer
    x = 12,211,778.84

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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.