Home / 21,989,470.95-30,346,280.71-13,285,962.02

Finding the Fourth Proportional to 21,989,470.95, 30,346,280.71 and 13,285,962.02

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Solution

The fourth proportional to 21,989,470.95, 30,346,280.71 and 13,285,962.02 is: 18,335,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989,470.95 : 30,346,280.71 = 13,285,962.02 : x
  2. Step 2: Convert to fraction form
    21,989,470.95/30,346,280.71 = 13,285,962.02/x
  3. Step 3: Cross multiply
    21,989,470.95x = 30,346,280.71 × 13,285,962.02
  4. Step 4: Simplify right side
    21,989,470.95x = 403,179,533,003,969.44
  5. Step 5: Solve for x
    x = 403,179,533,003,969.44/21,989,470.95
  6. Step 6: Final answer
    x = 18,335,117.47

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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.