Home / 15,315.32-21,137.43-9,350.46

Finding the Fourth Proportional to 15,315.32, 21,137.43 and 9,350.46

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Solution

The fourth proportional to 15,315.32, 21,137.43 and 9,350.46 is: 12,905.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.32 : 21,137.43 = 9,350.46 : x
  2. Step 2: Convert to fraction form
    15,315.32/21,137.43 = 9,350.46/x
  3. Step 3: Cross multiply
    15,315.32x = 21,137.43 × 9,350.46
  4. Step 4: Simplify right side
    15,315.32x = 197,644,541.28
  5. Step 5: Solve for x
    x = 197,644,541.28/15,315.32
  6. Step 6: Final answer
    x = 12,905.03

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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.