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Finding the Fourth Proportional to 18,342,416.40, 27,513,624.60 and 18,058,981.20

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Solution

The fourth proportional to 18,342,416.40, 27,513,624.60 and 18,058,981.20 is: 27,088,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342,416.40 : 27,513,624.60 = 18,058,981.20 : x
  2. Step 2: Convert to fraction form
    18,342,416.40/27,513,624.60 = 18,058,981.20/x
  3. Step 3: Cross multiply
    18,342,416.40x = 27,513,624.60 × 18,058,981.20
  4. Step 4: Simplify right side
    18,342,416.40x = 496,868,029,395,257.50
  5. Step 5: Solve for x
    x = 496,868,029,395,257.50/18,342,416.40
  6. Step 6: Final answer
    x = 27,088,471.80

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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.