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Finding the Fourth Proportional to 15,661,392.90, 23,492,089.35 and 8,486,939.40

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Solution

The fourth proportional to 15,661,392.90, 23,492,089.35 and 8,486,939.40 is: 12,730,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,392.90 : 23,492,089.35 = 8,486,939.40 : x
  2. Step 2: Convert to fraction form
    15,661,392.90/23,492,089.35 = 8,486,939.40/x
  3. Step 3: Cross multiply
    15,661,392.90x = 23,492,089.35 × 8,486,939.40
  4. Step 4: Simplify right side
    15,661,392.90x = 199,375,938,692,835.41
  5. Step 5: Solve for x
    x = 199,375,938,692,835.41/15,661,392.90
  6. Step 6: Final answer
    x = 12,730,409.10

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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.