Home / 19,317.78-26,656.20-10,818.72

Finding the Fourth Proportional to 19,317.78, 26,656.20 and 10,818.72

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Solution

The fourth proportional to 19,317.78, 26,656.20 and 10,818.72 is: 14,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,317.78 : 26,656.20 = 10,818.72 : x
  2. Step 2: Convert to fraction form
    19,317.78/26,656.20 = 10,818.72/x
  3. Step 3: Cross multiply
    19,317.78x = 26,656.20 × 10,818.72
  4. Step 4: Simplify right side
    19,317.78x = 288,385,964.06
  5. Step 5: Solve for x
    x = 288,385,964.06/19,317.78
  6. Step 6: Final answer
    x = 14,928.53

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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.