Home / 20,698,765.60-31,104,135.60-18,235,328.80

Finding the Fourth Proportional to 20,698,765.60, 31,104,135.60 and 18,235,328.80

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Solution

The fourth proportional to 20,698,765.60, 31,104,135.60 and 18,235,328.80 is: 27,402,317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,765.60 : 31,104,135.60 = 18,235,328.80 : x
  2. Step 2: Convert to fraction form
    20,698,765.60/31,104,135.60 = 18,235,328.80/x
  3. Step 3: Cross multiply
    20,698,765.60x = 31,104,135.60 × 18,235,328.80
  4. Step 4: Simplify right side
    20,698,765.60x = 567,194,139,705,785.38
  5. Step 5: Solve for x
    x = 567,194,139,705,785.38/20,698,765.60
  6. Step 6: Final answer
    x = 27,402,317.16

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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.