Home / 20,686,627.78-28,547,544.98-11,989,844.92

Finding the Fourth Proportional to 20,686,627.78, 28,547,544.98 and 11,989,844.92

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Solution

The fourth proportional to 20,686,627.78, 28,547,544.98 and 11,989,844.92 is: 16,545,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,627.78 : 28,547,544.98 = 11,989,844.92 : x
  2. Step 2: Convert to fraction form
    20,686,627.78/28,547,544.98 = 11,989,844.92/x
  3. Step 3: Cross multiply
    20,686,627.78x = 28,547,544.98 × 11,989,844.92
  4. Step 4: Simplify right side
    20,686,627.78x = 342,280,637,096,975.31
  5. Step 5: Solve for x
    x = 342,280,637,096,975.31/20,686,627.78
  6. Step 6: Final answer
    x = 16,545,985.20

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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.