Home / 20,274,085.65-27,955,823.19-12,920,276.28

Finding the Fourth Proportional to 20,274,085.65, 27,955,823.19 and 12,920,276.28

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Solution

The fourth proportional to 20,274,085.65, 27,955,823.19 and 12,920,276.28 is: 17,815,696.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274,085.65 : 27,955,823.19 = 12,920,276.28 : x
  2. Step 2: Convert to fraction form
    20,274,085.65/27,955,823.19 = 12,920,276.28/x
  3. Step 3: Cross multiply
    20,274,085.65x = 27,955,823.19 × 12,920,276.28
  4. Step 4: Simplify right side
    20,274,085.65x = 361,196,959,249,630.94
  5. Step 5: Solve for x
    x = 361,196,959,249,630.94/20,274,085.65
  6. Step 6: Final answer
    x = 17,815,696.62

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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.