Home / 12,145,986.80-18,218,980.20-4,955,130.80

Finding the Fourth Proportional to 12,145,986.80, 18,218,980.20 and 4,955,130.80

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Solution

The fourth proportional to 12,145,986.80, 18,218,980.20 and 4,955,130.80 is: 7,432,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,986.80 : 18,218,980.20 = 4,955,130.80 : x
  2. Step 2: Convert to fraction form
    12,145,986.80/18,218,980.20 = 4,955,130.80/x
  3. Step 3: Cross multiply
    12,145,986.80x = 18,218,980.20 × 4,955,130.80
  4. Step 4: Simplify right side
    12,145,986.80x = 90,277,429,933,610.16
  5. Step 5: Solve for x
    x = 90,277,429,933,610.16/12,145,986.80
  6. Step 6: Final answer
    x = 7,432,696.20

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1.5x scale

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.