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Finding the Fourth Proportional to 15,018.51, 20,723.74 and 8,303.23

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Solution

The fourth proportional to 15,018.51, 20,723.74 and 8,303.23 is: 11,457.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.51 : 20,723.74 = 8,303.23 : x
  2. Step 2: Convert to fraction form
    15,018.51/20,723.74 = 8,303.23/x
  3. Step 3: Cross multiply
    15,018.51x = 20,723.74 × 8,303.23
  4. Step 4: Simplify right side
    15,018.51x = 172,073,938.16
  5. Step 5: Solve for x
    x = 172,073,938.16/15,018.51
  6. Step 6: Final answer
    x = 11,457.46

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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.