Home / 15,017.21-20,725.26-8,303.35

Finding the Fourth Proportional to 15,017.21, 20,725.26 and 8,303.35

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Solution

The fourth proportional to 15,017.21, 20,725.26 and 8,303.35 is: 11,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.21 : 20,725.26 = 8,303.35 : x
  2. Step 2: Convert to fraction form
    15,017.21/20,725.26 = 8,303.35/x
  3. Step 3: Cross multiply
    15,017.21x = 20,725.26 × 8,303.35
  4. Step 4: Simplify right side
    15,017.21x = 172,088,983.99
  5. Step 5: Solve for x
    x = 172,088,983.99/15,017.21
  6. Step 6: Final answer
    x = 11,459.45

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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.