Home / 19,622.40-29,433.60-18,931.20

Finding the Fourth Proportional to 19,622.40, 29,433.60 and 18,931.20

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Solution

The fourth proportional to 19,622.40, 29,433.60 and 18,931.20 is: 28,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,622.40 : 29,433.60 = 18,931.20 : x
  2. Step 2: Convert to fraction form
    19,622.40/29,433.60 = 18,931.20/x
  3. Step 3: Cross multiply
    19,622.40x = 29,433.60 × 18,931.20
  4. Step 4: Simplify right side
    19,622.40x = 557,213,368.32
  5. Step 5: Solve for x
    x = 557,213,368.32/19,622.40
  6. Step 6: Final answer
    x = 28,396.80

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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.