Home / 20,686,624.07-28,547,539.86-11,989,841.23

Finding the Fourth Proportional to 20,686,624.07, 28,547,539.86 and 11,989,841.23

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Solution

The fourth proportional to 20,686,624.07, 28,547,539.86 and 11,989,841.23 is: 16,545,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,624.07 : 28,547,539.86 = 11,989,841.23 : x
  2. Step 2: Convert to fraction form
    20,686,624.07/28,547,539.86 = 11,989,841.23/x
  3. Step 3: Cross multiply
    20,686,624.07x = 28,547,539.86 × 11,989,841.23
  4. Step 4: Simplify right side
    20,686,624.07x = 342,280,470,428,496.44
  5. Step 5: Solve for x
    x = 342,280,470,428,496.44/20,686,624.07
  6. Step 6: Final answer
    x = 16,545,980.11

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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.