Home / 28,972.78-39,984.63-16,225.32

Finding the Fourth Proportional to 28,972.78, 39,984.63 and 16,225.32

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Solution

The fourth proportional to 28,972.78, 39,984.63 and 16,225.32 is: 22,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.78 : 39,984.63 = 16,225.32 : x
  2. Step 2: Convert to fraction form
    28,972.78/39,984.63 = 16,225.32/x
  3. Step 3: Cross multiply
    28,972.78x = 39,984.63 × 16,225.32
  4. Step 4: Simplify right side
    28,972.78x = 648,763,416.83
  5. Step 5: Solve for x
    x = 648,763,416.83/28,972.78
  6. Step 6: Final answer
    x = 22,392.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.