Home / 28,188.48-42,289.92-10,658.40

Finding the Fourth Proportional to 28,188.48, 42,289.92 and 10,658.40

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Solution

The fourth proportional to 28,188.48, 42,289.92 and 10,658.40 is: 15,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.48 : 42,289.92 = 10,658.40 : x
  2. Step 2: Convert to fraction form
    28,188.48/42,289.92 = 10,658.40/x
  3. Step 3: Cross multiply
    28,188.48x = 42,289.92 × 10,658.40
  4. Step 4: Simplify right side
    28,188.48x = 450,742,883.33
  5. Step 5: Solve for x
    x = 450,742,883.33/28,188.48
  6. Step 6: Final answer
    x = 15,990.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.