Home / 20,487,064.86-28,272,091.47-11,319,642.30

Finding the Fourth Proportional to 20,487,064.86, 28,272,091.47 and 11,319,642.30

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Solution

The fourth proportional to 20,487,064.86, 28,272,091.47 and 11,319,642.30 is: 15,621,074.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,064.86 : 28,272,091.47 = 11,319,642.30 : x
  2. Step 2: Convert to fraction form
    20,487,064.86/28,272,091.47 = 11,319,642.30/x
  3. Step 3: Cross multiply
    20,487,064.86x = 28,272,091.47 × 11,319,642.30
  4. Step 4: Simplify right side
    20,487,064.86x = 320,029,962,513,281.19
  5. Step 5: Solve for x
    x = 320,029,962,513,281.19/20,487,064.86
  6. Step 6: Final answer
    x = 15,621,074.31

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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.