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Finding the Fourth Proportional to 13,746,709.80, 20,620,064.70 and 11,556,988.20

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Solution

The fourth proportional to 13,746,709.80, 20,620,064.70 and 11,556,988.20 is: 17,335,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746,709.80 : 20,620,064.70 = 11,556,988.20 : x
  2. Step 2: Convert to fraction form
    13,746,709.80/20,620,064.70 = 11,556,988.20/x
  3. Step 3: Cross multiply
    13,746,709.80x = 20,620,064.70 × 11,556,988.20
  4. Step 4: Simplify right side
    13,746,709.80x = 238,305,844,421,136.53
  5. Step 5: Solve for x
    x = 238,305,844,421,136.53/13,746,709.80
  6. Step 6: Final answer
    x = 17,335,482.30

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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.