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Finding the Fourth Proportional to 18,736,279.20, 28,104,418.80 and 14,484,751.20

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Solution

The fourth proportional to 18,736,279.20, 28,104,418.80 and 14,484,751.20 is: 21,727,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736,279.20 : 28,104,418.80 = 14,484,751.20 : x
  2. Step 2: Convert to fraction form
    18,736,279.20/28,104,418.80 = 14,484,751.20/x
  3. Step 3: Cross multiply
    18,736,279.20x = 28,104,418.80 × 14,484,751.20
  4. Step 4: Simplify right side
    18,736,279.20x = 407,085,513,938,602.56
  5. Step 5: Solve for x
    x = 407,085,513,938,602.56/18,736,279.20
  6. Step 6: Final answer
    x = 21,727,126.80

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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.