Home / 28,716.63-39,627.70-15,970.66

Finding the Fourth Proportional to 28,716.63, 39,627.70 and 15,970.66

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Solution

The fourth proportional to 28,716.63, 39,627.70 and 15,970.66 is: 22,038.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,716.63 : 39,627.70 = 15,970.66 : x
  2. Step 2: Convert to fraction form
    28,716.63/39,627.70 = 15,970.66/x
  3. Step 3: Cross multiply
    28,716.63x = 39,627.70 × 15,970.66
  4. Step 4: Simplify right side
    28,716.63x = 632,880,523.28
  5. Step 5: Solve for x
    x = 632,880,523.28/28,716.63
  6. Step 6: Final answer
    x = 22,038.82

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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.