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Finding the Fourth Proportional to 10,971,860.40, 15,322,813.20 and 10,971,860.40

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Solution

The fourth proportional to 10,971,860.40, 15,322,813.20 and 10,971,860.40 is: 15,322,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971,860.40 : 15,322,813.20 = 10,971,860.40 : x
  2. Step 2: Convert to fraction form
    10,971,860.40/15,322,813.20 = 10,971,860.40/x
  3. Step 3: Cross multiply
    10,971,860.40x = 15,322,813.20 × 10,971,860.40
  4. Step 4: Simplify right side
    10,971,860.40x = 168,119,767,365,677.28
  5. Step 5: Solve for x
    x = 168,119,767,365,677.28/10,971,860.40
  6. Step 6: Final answer
    x = 15,322,813.20

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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.