Home / 28,358.33-39,133.64-16,421.90

Finding the Fourth Proportional to 28,358.33, 39,133.64 and 16,421.90

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Solution

The fourth proportional to 28,358.33, 39,133.64 and 16,421.90 is: 22,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.33 : 39,133.64 = 16,421.90 : x
  2. Step 2: Convert to fraction form
    28,358.33/39,133.64 = 16,421.90/x
  3. Step 3: Cross multiply
    28,358.33x = 39,133.64 × 16,421.90
  4. Step 4: Simplify right side
    28,358.33x = 642,648,444.94
  5. Step 5: Solve for x
    x = 642,648,444.94/28,358.33
  6. Step 6: Final answer
    x = 22,661.72

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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.