Home / 28,685,382-39,585,828.12-15,808,326

Finding the Fourth Proportional to 28,685,382, 39,585,828.12 and 15,808,326

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Solution

The fourth proportional to 28,685,382, 39,585,828.12 and 15,808,326 is: 21,815,490.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685,382 : 39,585,828.12 = 15,808,326 : x
  2. Step 2: Convert to fraction form
    28,685,382/39,585,828.12 = 15,808,326/x
  3. Step 3: Cross multiply
    28,685,382x = 39,585,828.12 × 15,808,326
  4. Step 4: Simplify right side
    28,685,382x = 625,785,675,900,927.12
  5. Step 5: Solve for x
    x = 625,785,675,900,927.12/28,685,382
  6. Step 6: Final answer
    x = 21,815,490.41

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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.