Home / 15,878,808.60-21,917,689.74-12,621,403.32

Finding the Fourth Proportional to 15,878,808.60, 21,917,689.74 and 12,621,403.32

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Solution

The fourth proportional to 15,878,808.60, 21,917,689.74 and 12,621,403.32 is: 17,421,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878,808.60 : 21,917,689.74 = 12,621,403.32 : x
  2. Step 2: Convert to fraction form
    15,878,808.60/21,917,689.74 = 12,621,403.32/x
  3. Step 3: Cross multiply
    15,878,808.60x = 21,917,689.74 × 12,621,403.32
  4. Step 4: Simplify right side
    15,878,808.60x = 276,632,002,051,165.94
  5. Step 5: Solve for x
    x = 276,632,002,051,165.94/15,878,808.60
  6. Step 6: Final answer
    x = 17,421,458.31

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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.