Home / 13,731.02-18,948.30-7,443.26

Finding the Fourth Proportional to 13,731.02, 18,948.30 and 7,443.26

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Solution

The fourth proportional to 13,731.02, 18,948.30 and 7,443.26 is: 10,271.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.02 : 18,948.30 = 7,443.26 : x
  2. Step 2: Convert to fraction form
    13,731.02/18,948.30 = 7,443.26/x
  3. Step 3: Cross multiply
    13,731.02x = 18,948.30 × 7,443.26
  4. Step 4: Simplify right side
    13,731.02x = 141,037,123.46
  5. Step 5: Solve for x
    x = 141,037,123.46/13,731.02
  6. Step 6: Final answer
    x = 10,271.42

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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.