Home / 18,341,985.40-25,285,261.26-12,818,210.20

Finding the Fourth Proportional to 18,341,985.40, 25,285,261.26 and 12,818,210.20

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Solution

The fourth proportional to 18,341,985.40, 25,285,261.26 and 12,818,210.20 is: 17,670,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,341,985.40 : 25,285,261.26 = 12,818,210.20 : x
  2. Step 2: Convert to fraction form
    18,341,985.40/25,285,261.26 = 12,818,210.20/x
  3. Step 3: Cross multiply
    18,341,985.40x = 25,285,261.26 × 12,818,210.20
  4. Step 4: Simplify right side
    18,341,985.40x = 324,111,793,792,596.88
  5. Step 5: Solve for x
    x = 324,111,793,792,596.88/18,341,985.40
  6. Step 6: Final answer
    x = 17,670,485.87

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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.