Home / 20,688,111.23-28,549,244.71-11,396,550.45

Finding the Fourth Proportional to 20,688,111.23, 28,549,244.71 and 11,396,550.45

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Solution

The fourth proportional to 20,688,111.23, 28,549,244.71 and 11,396,550.45 is: 15,727,047.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,111.23 : 28,549,244.71 = 11,396,550.45 : x
  2. Step 2: Convert to fraction form
    20,688,111.23/28,549,244.71 = 11,396,550.45/x
  3. Step 3: Cross multiply
    20,688,111.23x = 28,549,244.71 × 11,396,550.45
  4. Step 4: Simplify right side
    20,688,111.23x = 325,362,907,768,215.94
  5. Step 5: Solve for x
    x = 325,362,907,768,215.94/20,688,111.23
  6. Step 6: Final answer
    x = 15,727,047.49

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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.