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Finding the Fourth Proportional to 18,697,060.40, 28,045,590.60 and 8,461,900.40

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Solution

The fourth proportional to 18,697,060.40, 28,045,590.60 and 8,461,900.40 is: 12,692,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697,060.40 : 28,045,590.60 = 8,461,900.40 : x
  2. Step 2: Convert to fraction form
    18,697,060.40/28,045,590.60 = 8,461,900.40/x
  3. Step 3: Cross multiply
    18,697,060.40x = 28,045,590.60 × 8,461,900.40
  4. Step 4: Simplify right side
    18,697,060.40x = 237,318,994,316,376.25
  5. Step 5: Solve for x
    x = 237,318,994,316,376.25/18,697,060.40
  6. Step 6: Final answer
    x = 12,692,850.60

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1.5x scale

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.