Home / 13,918.19-19,206.71-7,949.74

Finding the Fourth Proportional to 13,918.19, 19,206.71 and 7,949.74

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Solution

The fourth proportional to 13,918.19, 19,206.71 and 7,949.74 is: 10,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.19 : 19,206.71 = 7,949.74 : x
  2. Step 2: Convert to fraction form
    13,918.19/19,206.71 = 7,949.74/x
  3. Step 3: Cross multiply
    13,918.19x = 19,206.71 × 7,949.74
  4. Step 4: Simplify right side
    13,918.19x = 152,688,214.97
  5. Step 5: Solve for x
    x = 152,688,214.97/13,918.19
  6. Step 6: Final answer
    x = 10,970.41

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1.5x scale

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.