Home / 15,018.35-20,723.74-8,302.90

Finding the Fourth Proportional to 15,018.35, 20,723.74 and 8,302.90

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Solution

The fourth proportional to 15,018.35, 20,723.74 and 8,302.90 is: 11,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.35 : 20,723.74 = 8,302.90 : x
  2. Step 2: Convert to fraction form
    15,018.35/20,723.74 = 8,302.90/x
  3. Step 3: Cross multiply
    15,018.35x = 20,723.74 × 8,302.90
  4. Step 4: Simplify right side
    15,018.35x = 172,066,995.71
  5. Step 5: Solve for x
    x = 172,066,995.71/15,018.35
  6. Step 6: Final answer
    x = 11,457.12

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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.