Home / 12,482,813.60-18,724,220.40-7,674,912.80

Finding the Fourth Proportional to 12,482,813.60, 18,724,220.40 and 7,674,912.80

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Solution

The fourth proportional to 12,482,813.60, 18,724,220.40 and 7,674,912.80 is: 11,512,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,813.60 : 18,724,220.40 = 7,674,912.80 : x
  2. Step 2: Convert to fraction form
    12,482,813.60/18,724,220.40 = 7,674,912.80/x
  3. Step 3: Cross multiply
    12,482,813.60x = 18,724,220.40 × 7,674,912.80
  4. Step 4: Simplify right side
    12,482,813.60x = 143,706,758,817,981.09
  5. Step 5: Solve for x
    x = 143,706,758,817,981.09/12,482,813.60
  6. Step 6: Final answer
    x = 11,512,369.20

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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.