Home / 20,686,640.16-28,547,562-11,989,857.28

Finding the Fourth Proportional to 20,686,640.16, 28,547,562 and 11,989,857.28

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Solution

The fourth proportional to 20,686,640.16, 28,547,562 and 11,989,857.28 is: 16,546,002.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,640.16 : 28,547,562 = 11,989,857.28 : x
  2. Step 2: Convert to fraction form
    20,686,640.16/28,547,562 = 11,989,857.28/x
  3. Step 3: Cross multiply
    20,686,640.16x = 28,547,562 × 11,989,857.28
  4. Step 4: Simplify right side
    20,686,640.16x = 342,281,194,071,951.31
  5. Step 5: Solve for x
    x = 342,281,194,071,951.31/20,686,640.16
  6. Step 6: Final answer
    x = 16,546,002.22

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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.