Home / 15,216,118.47-20,985,999.68-13,376,643.71

Finding the Fourth Proportional to 15,216,118.47, 20,985,999.68 and 13,376,643.71

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Solution

The fourth proportional to 15,216,118.47, 20,985,999.68 and 13,376,643.71 is: 18,449,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216,118.47 : 20,985,999.68 = 13,376,643.71 : x
  2. Step 2: Convert to fraction form
    15,216,118.47/20,985,999.68 = 13,376,643.71/x
  3. Step 3: Cross multiply
    15,216,118.47x = 20,985,999.68 × 13,376,643.71
  4. Step 4: Simplify right side
    15,216,118.47x = 280,722,240,617,534.03
  5. Step 5: Solve for x
    x = 280,722,240,617,534.03/15,216,118.47
  6. Step 6: Final answer
    x = 18,449,004.66

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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.