Home / 19,276.86-28,915.14-9,919.50

Finding the Fourth Proportional to 19,276.86, 28,915.14 and 9,919.50

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Solution

The fourth proportional to 19,276.86, 28,915.14 and 9,919.50 is: 14,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,276.86 : 28,915.14 = 9,919.50 : x
  2. Step 2: Convert to fraction form
    19,276.86/28,915.14 = 9,919.50/x
  3. Step 3: Cross multiply
    19,276.86x = 28,915.14 × 9,919.50
  4. Step 4: Simplify right side
    19,276.86x = 286,823,731.23
  5. Step 5: Solve for x
    x = 286,823,731.23/19,276.86
  6. Step 6: Final answer
    x = 14,879.17

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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.