Home / 13,480,287.40-20,220,431.10-10,456,978.60

Finding the Fourth Proportional to 13,480,287.40, 20,220,431.10 and 10,456,978.60

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Solution

The fourth proportional to 13,480,287.40, 20,220,431.10 and 10,456,978.60 is: 15,685,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480,287.40 : 20,220,431.10 = 10,456,978.60 : x
  2. Step 2: Convert to fraction form
    13,480,287.40/20,220,431.10 = 10,456,978.60/x
  3. Step 3: Cross multiply
    13,480,287.40x = 20,220,431.10 × 10,456,978.60
  4. Step 4: Simplify right side
    13,480,287.40x = 211,444,615,295,474.47
  5. Step 5: Solve for x
    x = 211,444,615,295,474.47/13,480,287.40
  6. Step 6: Final answer
    x = 15,685,467.90

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1.5x scale

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.