Home / 21,022,114.80-31,533,172.20-19,746,656.40

Finding the Fourth Proportional to 21,022,114.80, 31,533,172.20 and 19,746,656.40

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Solution

The fourth proportional to 21,022,114.80, 31,533,172.20 and 19,746,656.40 is: 29,619,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,114.80 : 31,533,172.20 = 19,746,656.40 : x
  2. Step 2: Convert to fraction form
    21,022,114.80/31,533,172.20 = 19,746,656.40/x
  3. Step 3: Cross multiply
    21,022,114.80x = 31,533,172.20 × 19,746,656.40
  4. Step 4: Simplify right side
    21,022,114.80x = 622,674,716,635,432
  5. Step 5: Solve for x
    x = 622,674,716,635,432/21,022,114.80
  6. Step 6: Final answer
    x = 29,619,984.60

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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.