Home / 20,688,302.80-31,032,454.20-18,456,250.60

Finding the Fourth Proportional to 20,688,302.80, 31,032,454.20 and 18,456,250.60

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Solution

The fourth proportional to 20,688,302.80, 31,032,454.20 and 18,456,250.60 is: 27,684,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,302.80 : 31,032,454.20 = 18,456,250.60 : x
  2. Step 2: Convert to fraction form
    20,688,302.80/31,032,454.20 = 18,456,250.60/x
  3. Step 3: Cross multiply
    20,688,302.80x = 31,032,454.20 × 18,456,250.60
  4. Step 4: Simplify right side
    20,688,302.80x = 572,742,751,448,222.50
  5. Step 5: Solve for x
    x = 572,742,751,448,222.50/20,688,302.80
  6. Step 6: Final answer
    x = 27,684,375.90

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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.