Home / 12,431.28-18,646.74-3,071.40

Finding the Fourth Proportional to 12,431.28, 18,646.74 and 3,071.40

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Solution

The fourth proportional to 12,431.28, 18,646.74 and 3,071.40 is: 4,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.28 : 18,646.74 = 3,071.40 : x
  2. Step 2: Convert to fraction form
    12,431.28/18,646.74 = 3,071.40/x
  3. Step 3: Cross multiply
    12,431.28x = 18,646.74 × 3,071.40
  4. Step 4: Simplify right side
    12,431.28x = 57,271,597.24
  5. Step 5: Solve for x
    x = 57,271,597.24/12,431.28
  6. Step 6: Final answer
    x = 4,607.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.