Home / 15,376.32-21,222.88-9,005.92

Finding the Fourth Proportional to 15,376.32, 21,222.88 and 9,005.92

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Solution

The fourth proportional to 15,376.32, 21,222.88 and 9,005.92 is: 12,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.32 : 21,222.88 = 9,005.92 : x
  2. Step 2: Convert to fraction form
    15,376.32/21,222.88 = 9,005.92/x
  3. Step 3: Cross multiply
    15,376.32x = 21,222.88 × 9,005.92
  4. Step 4: Simplify right side
    15,376.32x = 191,131,559.45
  5. Step 5: Solve for x
    x = 191,131,559.45/15,376.32
  6. Step 6: Final answer
    x = 12,430.25

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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.