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Finding the Fourth Proportional to 13,564,609.80, 20,346,914.70 and 12,525,347.40

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Solution

The fourth proportional to 13,564,609.80, 20,346,914.70 and 12,525,347.40 is: 18,788,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564,609.80 : 20,346,914.70 = 12,525,347.40 : x
  2. Step 2: Convert to fraction form
    13,564,609.80/20,346,914.70 = 12,525,347.40/x
  3. Step 3: Cross multiply
    13,564,609.80x = 20,346,914.70 × 12,525,347.40
  4. Step 4: Simplify right side
    13,564,609.80x = 254,852,175,135,666.78
  5. Step 5: Solve for x
    x = 254,852,175,135,666.78/13,564,609.80
  6. Step 6: Final answer
    x = 18,788,021.10

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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.