Home / 21,478,921.59-32,175,866.90-18,786,287.19

Finding the Fourth Proportional to 21,478,921.59, 32,175,866.90 and 18,786,287.19

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Solution

The fourth proportional to 21,478,921.59, 32,175,866.90 and 18,786,287.19 is: 28,142,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478,921.59 : 32,175,866.90 = 18,786,287.19 : x
  2. Step 2: Convert to fraction form
    21,478,921.59/32,175,866.90 = 18,786,287.19/x
  3. Step 3: Cross multiply
    21,478,921.59x = 32,175,866.90 × 18,786,287.19
  4. Step 4: Simplify right side
    21,478,921.59x = 604,465,076,104,405.12
  5. Step 5: Solve for x
    x = 604,465,076,104,405.12/21,478,921.59
  6. Step 6: Final answer
    x = 28,142,245.11

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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.