Home / 13,680,279.60-18,877,126.32-7,880,938.80

Finding the Fourth Proportional to 13,680,279.60, 18,877,126.32 and 7,880,938.80

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Solution

The fourth proportional to 13,680,279.60, 18,877,126.32 and 7,880,938.80 is: 10,874,739.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680,279.60 : 18,877,126.32 = 7,880,938.80 : x
  2. Step 2: Convert to fraction form
    13,680,279.60/18,877,126.32 = 7,880,938.80/x
  3. Step 3: Cross multiply
    13,680,279.60x = 18,877,126.32 × 7,880,938.80
  4. Step 4: Simplify right side
    13,680,279.60x = 148,769,477,247,789.22
  5. Step 5: Solve for x
    x = 148,769,477,247,789.22/13,680,279.60
  6. Step 6: Final answer
    x = 10,874,739.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.