Home / 21,069,719.52-31,607,109.36-7,420,042.80

Finding the Fourth Proportional to 21,069,719.52, 31,607,109.36 and 7,420,042.80

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Solution

The fourth proportional to 21,069,719.52, 31,607,109.36 and 7,420,042.80 is: 11,130,955.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,719.52 : 31,607,109.36 = 7,420,042.80 : x
  2. Step 2: Convert to fraction form
    21,069,719.52/31,607,109.36 = 7,420,042.80/x
  3. Step 3: Cross multiply
    21,069,719.52x = 31,607,109.36 × 7,420,042.80
  4. Step 4: Simplify right side
    21,069,719.52x = 234,526,104,235,480.59
  5. Step 5: Solve for x
    x = 234,526,104,235,480.59/21,069,719.52
  6. Step 6: Final answer
    x = 11,130,955.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.