Home / 15,730.34-21,684.39-10,415.93

Finding the Fourth Proportional to 15,730.34, 21,684.39 and 10,415.93

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Solution

The fourth proportional to 15,730.34, 21,684.39 and 10,415.93 is: 14,358.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.34 : 21,684.39 = 10,415.93 : x
  2. Step 2: Convert to fraction form
    15,730.34/21,684.39 = 10,415.93/x
  3. Step 3: Cross multiply
    15,730.34x = 21,684.39 × 10,415.93
  4. Step 4: Simplify right side
    15,730.34x = 225,863,088.33
  5. Step 5: Solve for x
    x = 225,863,088.33/15,730.34
  6. Step 6: Final answer
    x = 14,358.44

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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.