Home / 15,113.34-20,857.39-9,145.26

Finding the Fourth Proportional to 15,113.34, 20,857.39 and 9,145.26

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Solution

The fourth proportional to 15,113.34, 20,857.39 and 9,145.26 is: 12,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.34 : 20,857.39 = 9,145.26 : x
  2. Step 2: Convert to fraction form
    15,113.34/20,857.39 = 9,145.26/x
  3. Step 3: Cross multiply
    15,113.34x = 20,857.39 × 9,145.26
  4. Step 4: Simplify right side
    15,113.34x = 190,746,254.47
  5. Step 5: Solve for x
    x = 190,746,254.47/15,113.34
  6. Step 6: Final answer
    x = 12,621.05

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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.