Home / 15,780.40-23,653.70-7,867.32

Finding the Fourth Proportional to 15,780.40, 23,653.70 and 7,867.32

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Solution

The fourth proportional to 15,780.40, 23,653.70 and 7,867.32 is: 11,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.40 : 23,653.70 = 7,867.32 : x
  2. Step 2: Convert to fraction form
    15,780.40/23,653.70 = 7,867.32/x
  3. Step 3: Cross multiply
    15,780.40x = 23,653.70 × 7,867.32
  4. Step 4: Simplify right side
    15,780.40x = 186,091,227.08
  5. Step 5: Solve for x
    x = 186,091,227.08/15,780.40
  6. Step 6: Final answer
    x = 11,792.55

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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.