Home / 20,365,321.13-28,103,945.57-11,072,891.07

Finding the Fourth Proportional to 20,365,321.13, 28,103,945.57 and 11,072,891.07

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Solution

The fourth proportional to 20,365,321.13, 28,103,945.57 and 11,072,891.07 is: 15,280,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365,321.13 : 28,103,945.57 = 11,072,891.07 : x
  2. Step 2: Convert to fraction form
    20,365,321.13/28,103,945.57 = 11,072,891.07/x
  3. Step 3: Cross multiply
    20,365,321.13x = 28,103,945.57 × 11,072,891.07
  4. Step 4: Simplify right side
    20,365,321.13x = 311,191,927,961,501.31
  5. Step 5: Solve for x
    x = 311,191,927,961,501.31/20,365,321.13
  6. Step 6: Final answer
    x = 15,280,482.24

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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.