Home / 26,920.81-40,389.48-13,782.40

Finding the Fourth Proportional to 26,920.81, 40,389.48 and 13,782.40

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Solution

The fourth proportional to 26,920.81, 40,389.48 and 13,782.40 is: 20,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,920.81 : 40,389.48 = 13,782.40 : x
  2. Step 2: Convert to fraction form
    26,920.81/40,389.48 = 13,782.40/x
  3. Step 3: Cross multiply
    26,920.81x = 40,389.48 × 13,782.40
  4. Step 4: Simplify right side
    26,920.81x = 556,663,969.15
  5. Step 5: Solve for x
    x = 556,663,969.15/26,920.81
  6. Step 6: Final answer
    x = 20,677.83

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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.