Home / 18,723,376.80-28,085,065.20-12,346,084.80

Finding the Fourth Proportional to 18,723,376.80, 28,085,065.20 and 12,346,084.80

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Solution

The fourth proportional to 18,723,376.80, 28,085,065.20 and 12,346,084.80 is: 18,519,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,376.80 : 28,085,065.20 = 12,346,084.80 : x
  2. Step 2: Convert to fraction form
    18,723,376.80/28,085,065.20 = 12,346,084.80/x
  3. Step 3: Cross multiply
    18,723,376.80x = 28,085,065.20 × 12,346,084.80
  4. Step 4: Simplify right side
    18,723,376.80x = 346,740,596,572,729
  5. Step 5: Solve for x
    x = 346,740,596,572,729/18,723,376.80
  6. Step 6: Final answer
    x = 18,519,127.20

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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.