Home / 28,963.32-39,966.53-16,215.81

Finding the Fourth Proportional to 28,963.32, 39,966.53 and 16,215.81

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Solution

The fourth proportional to 28,963.32, 39,966.53 and 16,215.81 is: 22,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963.32 : 39,966.53 = 16,215.81 : x
  2. Step 2: Convert to fraction form
    28,963.32/39,966.53 = 16,215.81/x
  3. Step 3: Cross multiply
    28,963.32x = 39,966.53 × 16,215.81
  4. Step 4: Simplify right side
    28,963.32x = 648,089,575.76
  5. Step 5: Solve for x
    x = 648,089,575.76/28,963.32
  6. Step 6: Final answer
    x = 22,376.22

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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.