Home / 19,109.79-26,371.75-10,612.45

Finding the Fourth Proportional to 19,109.79, 26,371.75 and 10,612.45

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Solution

The fourth proportional to 19,109.79, 26,371.75 and 10,612.45 is: 14,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.79 : 26,371.75 = 10,612.45 : x
  2. Step 2: Convert to fraction form
    19,109.79/26,371.75 = 10,612.45/x
  3. Step 3: Cross multiply
    19,109.79x = 26,371.75 × 10,612.45
  4. Step 4: Simplify right side
    19,109.79x = 279,868,746.43
  5. Step 5: Solve for x
    x = 279,868,746.43/19,109.79
  6. Step 6: Final answer
    x = 14,645.31

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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.