Home / 19,557.12-26,981.76-12,846.40

Finding the Fourth Proportional to 19,557.12, 26,981.76 and 12,846.40

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Solution

The fourth proportional to 19,557.12, 26,981.76 and 12,846.40 is: 17,723.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,557.12 : 26,981.76 = 12,846.40 : x
  2. Step 2: Convert to fraction form
    19,557.12/26,981.76 = 12,846.40/x
  3. Step 3: Cross multiply
    19,557.12x = 26,981.76 × 12,846.40
  4. Step 4: Simplify right side
    19,557.12x = 346,618,481.66
  5. Step 5: Solve for x
    x = 346,618,481.66/19,557.12
  6. Step 6: Final answer
    x = 17,723.39

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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.