Home / 20,686,627.74-28,547,544.93-11,989,844.89

Finding the Fourth Proportional to 20,686,627.74, 28,547,544.93 and 11,989,844.89

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Solution

The fourth proportional to 20,686,627.74, 28,547,544.93 and 11,989,844.89 is: 16,545,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,627.74 : 28,547,544.93 = 11,989,844.89 : x
  2. Step 2: Convert to fraction form
    20,686,627.74/28,547,544.93 = 11,989,844.89/x
  3. Step 3: Cross multiply
    20,686,627.74x = 28,547,544.93 × 11,989,844.89
  4. Step 4: Simplify right side
    20,686,627.74x = 342,280,635,736,690.31
  5. Step 5: Solve for x
    x = 342,280,635,736,690.31/20,686,627.74
  6. Step 6: Final answer
    x = 16,545,985.16

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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.