Home / 28,283.54-39,030.20-15,709.10

Finding the Fourth Proportional to 28,283.54, 39,030.20 and 15,709.10

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Solution

The fourth proportional to 28,283.54, 39,030.20 and 15,709.10 is: 21,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.54 : 39,030.20 = 15,709.10 : x
  2. Step 2: Convert to fraction form
    28,283.54/39,030.20 = 15,709.10/x
  3. Step 3: Cross multiply
    28,283.54x = 39,030.20 × 15,709.10
  4. Step 4: Simplify right side
    28,283.54x = 613,129,041.12
  5. Step 5: Solve for x
    x = 613,129,041.12/28,283.54
  6. Step 6: Final answer
    x = 21,677.95

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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.