Home / 28,685,384-39,585,830.88-15,808,328

Finding the Fourth Proportional to 28,685,384, 39,585,830.88 and 15,808,328

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Solution

The fourth proportional to 28,685,384, 39,585,830.88 and 15,808,328 is: 21,815,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685,384 : 39,585,830.88 = 15,808,328 : x
  2. Step 2: Convert to fraction form
    28,685,384/39,585,830.88 = 15,808,328/x
  3. Step 3: Cross multiply
    28,685,384x = 39,585,830.88 × 15,808,328
  4. Step 4: Simplify right side
    28,685,384x = 625,785,798,703,568.62
  5. Step 5: Solve for x
    x = 625,785,798,703,568.62/28,685,384
  6. Step 6: Final answer
    x = 21,815,493.17

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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.