Home / 19,158.90-28,686.42-9,905.46

Finding the Fourth Proportional to 19,158.90, 28,686.42 and 9,905.46

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Solution

The fourth proportional to 19,158.90, 28,686.42 and 9,905.46 is: 14,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.90 : 28,686.42 = 9,905.46 : x
  2. Step 2: Convert to fraction form
    19,158.90/28,686.42 = 9,905.46/x
  3. Step 3: Cross multiply
    19,158.90x = 28,686.42 × 9,905.46
  4. Step 4: Simplify right side
    19,158.90x = 284,152,185.85
  5. Step 5: Solve for x
    x = 284,152,185.85/19,158.90
  6. Step 6: Final answer
    x = 14,831.34

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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.