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Finding the Fourth Proportional to 28,927.99, 39,920.10 and 16,352.74

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Solution

The fourth proportional to 28,927.99, 39,920.10 and 16,352.74 is: 22,566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,927.99 : 39,920.10 = 16,352.74 : x
  2. Step 2: Convert to fraction form
    28,927.99/39,920.10 = 16,352.74/x
  3. Step 3: Cross multiply
    28,927.99x = 39,920.10 × 16,352.74
  4. Step 4: Simplify right side
    28,927.99x = 652,803,016.07
  5. Step 5: Solve for x
    x = 652,803,016.07/28,927.99
  6. Step 6: Final answer
    x = 22,566.48

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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.