Home / 20,509,623.68-28,303,210.69-11,342,069.60

Finding the Fourth Proportional to 20,509,623.68, 28,303,210.69 and 11,342,069.60

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Solution

The fourth proportional to 20,509,623.68, 28,303,210.69 and 11,342,069.60 is: 15,652,017.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509,623.68 : 28,303,210.69 = 11,342,069.60 : x
  2. Step 2: Convert to fraction form
    20,509,623.68/28,303,210.69 = 11,342,069.60/x
  3. Step 3: Cross multiply
    20,509,623.68x = 28,303,210.69 × 11,342,069.60
  4. Step 4: Simplify right side
    20,509,623.68x = 321,016,985,379,572.81
  5. Step 5: Solve for x
    x = 321,016,985,379,572.81/20,509,623.68
  6. Step 6: Final answer
    x = 15,652,017.34

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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.