Home / 15,726.09-21,678.53-10,411.68

Finding the Fourth Proportional to 15,726.09, 21,678.53 and 10,411.68

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Solution

The fourth proportional to 15,726.09, 21,678.53 and 10,411.68 is: 14,352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.09 : 21,678.53 = 10,411.68 : x
  2. Step 2: Convert to fraction form
    15,726.09/21,678.53 = 10,411.68/x
  3. Step 3: Cross multiply
    15,726.09x = 21,678.53 × 10,411.68
  4. Step 4: Simplify right side
    15,726.09x = 225,709,865.17
  5. Step 5: Solve for x
    x = 225,709,865.17/15,726.09
  6. Step 6: Final answer
    x = 14,352.57

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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.