Home / 28,465.50-39,284.31-15,890.52

Finding the Fourth Proportional to 28,465.50, 39,284.31 and 15,890.52

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Solution

The fourth proportional to 28,465.50, 39,284.31 and 15,890.52 is: 21,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.50 : 39,284.31 = 15,890.52 : x
  2. Step 2: Convert to fraction form
    28,465.50/39,284.31 = 15,890.52/x
  3. Step 3: Cross multiply
    28,465.50x = 39,284.31 × 15,890.52
  4. Step 4: Simplify right side
    28,465.50x = 624,248,113.74
  5. Step 5: Solve for x
    x = 624,248,113.74/28,465.50
  6. Step 6: Final answer
    x = 21,929.99

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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.