Home / 28,964.79-39,969.47-16,215.82

Finding the Fourth Proportional to 28,964.79, 39,969.47 and 16,215.82

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Solution

The fourth proportional to 28,964.79, 39,969.47 and 16,215.82 is: 22,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964.79 : 39,969.47 = 16,215.82 : x
  2. Step 2: Convert to fraction form
    28,964.79/39,969.47 = 16,215.82/x
  3. Step 3: Cross multiply
    28,964.79x = 39,969.47 × 16,215.82
  4. Step 4: Simplify right side
    28,964.79x = 648,137,671.63
  5. Step 5: Solve for x
    x = 648,137,671.63/28,964.79
  6. Step 6: Final answer
    x = 22,376.74

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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.