Home / 22,661.07-31,235.93-15,390.91

Finding the Fourth Proportional to 22,661.07, 31,235.93 and 15,390.91

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Solution

The fourth proportional to 22,661.07, 31,235.93 and 15,390.91 is: 21,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661.07 : 31,235.93 = 15,390.91 : x
  2. Step 2: Convert to fraction form
    22,661.07/31,235.93 = 15,390.91/x
  3. Step 3: Cross multiply
    22,661.07x = 31,235.93 × 15,390.91
  4. Step 4: Simplify right side
    22,661.07x = 480,749,407.20
  5. Step 5: Solve for x
    x = 480,749,407.20/22,661.07
  6. Step 6: Final answer
    x = 21,214.77

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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.