Home / 19,152.28-28,728.32-4,920.74

Finding the Fourth Proportional to 19,152.28, 28,728.32 and 4,920.74

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Solution

The fourth proportional to 19,152.28, 28,728.32 and 4,920.74 is: 7,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152.28 : 28,728.32 = 4,920.74 : x
  2. Step 2: Convert to fraction form
    19,152.28/28,728.32 = 4,920.74/x
  3. Step 3: Cross multiply
    19,152.28x = 28,728.32 × 4,920.74
  4. Step 4: Simplify right side
    19,152.28x = 141,364,677.48
  5. Step 5: Solve for x
    x = 141,364,677.48/19,152.28
  6. Step 6: Final answer
    x = 7,381.09

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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.