Home / 14,376.40-21,437.63-12,628.57

Finding the Fourth Proportional to 14,376.40, 21,437.63 and 12,628.57

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Solution

The fourth proportional to 14,376.40, 21,437.63 and 12,628.57 is: 18,831.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,376.40 : 21,437.63 = 12,628.57 : x
  2. Step 2: Convert to fraction form
    14,376.40/21,437.63 = 12,628.57/x
  3. Step 3: Cross multiply
    14,376.40x = 21,437.63 × 12,628.57
  4. Step 4: Simplify right side
    14,376.40x = 270,726,611.09
  5. Step 5: Solve for x
    x = 270,726,611.09/14,376.40
  6. Step 6: Final answer
    x = 18,831.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.