Home / 14,085.76-21,111.36-12,357.76

Finding the Fourth Proportional to 14,085.76, 21,111.36 and 12,357.76

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Solution

The fourth proportional to 14,085.76, 21,111.36 and 12,357.76 is: 18,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,085.76 : 21,111.36 = 12,357.76 : x
  2. Step 2: Convert to fraction form
    14,085.76/21,111.36 = 12,357.76/x
  3. Step 3: Cross multiply
    14,085.76x = 21,111.36 × 12,357.76
  4. Step 4: Simplify right side
    14,085.76x = 260,889,120.15
  5. Step 5: Solve for x
    x = 260,889,120.15/14,085.76
  6. Step 6: Final answer
    x = 18,521.48

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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.