Home / 15,082.28-20,812.22-8,368.34

Finding the Fourth Proportional to 15,082.28, 20,812.22 and 8,368.34

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Solution

The fourth proportional to 15,082.28, 20,812.22 and 8,368.34 is: 11,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.28 : 20,812.22 = 8,368.34 : x
  2. Step 2: Convert to fraction form
    15,082.28/20,812.22 = 8,368.34/x
  3. Step 3: Cross multiply
    15,082.28x = 20,812.22 × 8,368.34
  4. Step 4: Simplify right side
    15,082.28x = 174,163,733.11
  5. Step 5: Solve for x
    x = 174,163,733.11/15,082.28
  6. Step 6: Final answer
    x = 11,547.57

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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.