Home / 19,428.39-26,809.94-10,929.47

Finding the Fourth Proportional to 19,428.39, 26,809.94 and 10,929.47

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Solution

The fourth proportional to 19,428.39, 26,809.94 and 10,929.47 is: 15,081.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.39 : 26,809.94 = 10,929.47 : x
  2. Step 2: Convert to fraction form
    19,428.39/26,809.94 = 10,929.47/x
  3. Step 3: Cross multiply
    19,428.39x = 26,809.94 × 10,929.47
  4. Step 4: Simplify right side
    19,428.39x = 293,018,328.21
  5. Step 5: Solve for x
    x = 293,018,328.21/19,428.39
  6. Step 6: Final answer
    x = 15,081.97

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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.