Home / 12,547,986.40-18,821,979.60-11,178,049.60

Finding the Fourth Proportional to 12,547,986.40, 18,821,979.60 and 11,178,049.60

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Solution

The fourth proportional to 12,547,986.40, 18,821,979.60 and 11,178,049.60 is: 16,767,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547,986.40 : 18,821,979.60 = 11,178,049.60 : x
  2. Step 2: Convert to fraction form
    12,547,986.40/18,821,979.60 = 11,178,049.60/x
  3. Step 3: Cross multiply
    12,547,986.40x = 18,821,979.60 × 11,178,049.60
  4. Step 4: Simplify right side
    12,547,986.40x = 210,393,021,538,988.16
  5. Step 5: Solve for x
    x = 210,393,021,538,988.16/12,547,986.40
  6. Step 6: Final answer
    x = 16,767,074.40

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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.