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Finding the Fourth Proportional to 15,556,800.70, 21,729,132.50 and 15,556,800.70

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Solution

The fourth proportional to 15,556,800.70, 21,729,132.50 and 15,556,800.70 is: 21,729,132.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,556,800.70 : 21,729,132.50 = 15,556,800.70 : x
  2. Step 2: Convert to fraction form
    15,556,800.70/21,729,132.50 = 15,556,800.70/x
  3. Step 3: Cross multiply
    15,556,800.70x = 21,729,132.50 × 15,556,800.70
  4. Step 4: Simplify right side
    15,556,800.70x = 338,035,783,686,392.75
  5. Step 5: Solve for x
    x = 338,035,783,686,392.75/15,556,800.70
  6. Step 6: Final answer
    x = 21,729,132.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.