Home / 12,368.60-18,531.30-10,165.40

Finding the Fourth Proportional to 12,368.60, 18,531.30 and 10,165.40

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Solution

The fourth proportional to 12,368.60, 18,531.30 and 10,165.40 is: 15,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.60 : 18,531.30 = 10,165.40 : x
  2. Step 2: Convert to fraction form
    12,368.60/18,531.30 = 10,165.40/x
  3. Step 3: Cross multiply
    12,368.60x = 18,531.30 × 10,165.40
  4. Step 4: Simplify right side
    12,368.60x = 188,378,077.02
  5. Step 5: Solve for x
    x = 188,378,077.02/12,368.60
  6. Step 6: Final answer
    x = 15,230.35

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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.