Home / 18,889,538.40-28,365,800.40-12,527,992.80

Finding the Fourth Proportional to 18,889,538.40, 28,365,800.40 and 12,527,992.80

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Solution

The fourth proportional to 18,889,538.40, 28,365,800.40 and 12,527,992.80 is: 18,812,875.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889,538.40 : 28,365,800.40 = 12,527,992.80 : x
  2. Step 2: Convert to fraction form
    18,889,538.40/28,365,800.40 = 12,527,992.80/x
  3. Step 3: Cross multiply
    18,889,538.40x = 28,365,800.40 × 12,527,992.80
  4. Step 4: Simplify right side
    18,889,538.40x = 355,366,543,177,437.12
  5. Step 5: Solve for x
    x = 355,366,543,177,437.12/18,889,538.40
  6. Step 6: Final answer
    x = 18,812,875.98

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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.