Home / 19,358.46-26,686.40-13,683.20

Finding the Fourth Proportional to 19,358.46, 26,686.40 and 13,683.20

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Solution

The fourth proportional to 19,358.46, 26,686.40 and 13,683.20 is: 18,862.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.46 : 26,686.40 = 13,683.20 : x
  2. Step 2: Convert to fraction form
    19,358.46/26,686.40 = 13,683.20/x
  3. Step 3: Cross multiply
    19,358.46x = 26,686.40 × 13,683.20
  4. Step 4: Simplify right side
    19,358.46x = 365,155,348.48
  5. Step 5: Solve for x
    x = 365,155,348.48/19,358.46
  6. Step 6: Final answer
    x = 18,862.83

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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.