Home / 13,283.28-18,329.70-7,315.20

Finding the Fourth Proportional to 13,283.28, 18,329.70 and 7,315.20

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Solution

The fourth proportional to 13,283.28, 18,329.70 and 7,315.20 is: 10,094.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.28 : 18,329.70 = 7,315.20 : x
  2. Step 2: Convert to fraction form
    13,283.28/18,329.70 = 7,315.20/x
  3. Step 3: Cross multiply
    13,283.28x = 18,329.70 × 7,315.20
  4. Step 4: Simplify right side
    13,283.28x = 134,085,421.44
  5. Step 5: Solve for x
    x = 134,085,421.44/13,283.28
  6. Step 6: Final answer
    x = 10,094.30

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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.