Home / 17,838.08-26,763.32-7,978.40

Finding the Fourth Proportional to 17,838.08, 26,763.32 and 7,978.40

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Solution

The fourth proportional to 17,838.08, 26,763.32 and 7,978.40 is: 11,970.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,838.08 : 26,763.32 = 7,978.40 : x
  2. Step 2: Convert to fraction form
    17,838.08/26,763.32 = 7,978.40/x
  3. Step 3: Cross multiply
    17,838.08x = 26,763.32 × 7,978.40
  4. Step 4: Simplify right side
    17,838.08x = 213,528,472.29
  5. Step 5: Solve for x
    x = 213,528,472.29/17,838.08
  6. Step 6: Final answer
    x = 11,970.37

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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.