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Finding the Fourth Proportional to 21,499,890.60, 30,184,877.40 and 21,499,890.60

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Solution

The fourth proportional to 21,499,890.60, 30,184,877.40 and 21,499,890.60 is: 30,184,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,499,890.60 : 30,184,877.40 = 21,499,890.60 : x
  2. Step 2: Convert to fraction form
    21,499,890.60/30,184,877.40 = 21,499,890.60/x
  3. Step 3: Cross multiply
    21,499,890.60x = 30,184,877.40 × 21,499,890.60
  4. Step 4: Simplify right side
    21,499,890.60x = 648,971,561,874,412.50
  5. Step 5: Solve for x
    x = 648,971,561,874,412.50/21,499,890.60
  6. Step 6: Final answer
    x = 30,184,877.40

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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.