Home / 30,587,485.88-42,214,761.60-18,365,130.20

Finding the Fourth Proportional to 30,587,485.88, 42,214,761.60 and 18,365,130.20

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Solution

The fourth proportional to 30,587,485.88, 42,214,761.60 and 18,365,130.20 is: 25,346,299.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587,485.88 : 42,214,761.60 = 18,365,130.20 : x
  2. Step 2: Convert to fraction form
    30,587,485.88/42,214,761.60 = 18,365,130.20/x
  3. Step 3: Cross multiply
    30,587,485.88x = 42,214,761.60 × 18,365,130.20
  4. Step 4: Simplify right side
    30,587,485.88x = 775,279,593,182,591.25
  5. Step 5: Solve for x
    x = 775,279,593,182,591.25/30,587,485.88
  6. Step 6: Final answer
    x = 25,346,299.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.