Home / 13,776.48-19,011.12-8,111.76

Finding the Fourth Proportional to 13,776.48, 19,011.12 and 8,111.76

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Solution

The fourth proportional to 13,776.48, 19,011.12 and 8,111.76 is: 11,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.48 : 19,011.12 = 8,111.76 : x
  2. Step 2: Convert to fraction form
    13,776.48/19,011.12 = 8,111.76/x
  3. Step 3: Cross multiply
    13,776.48x = 19,011.12 × 8,111.76
  4. Step 4: Simplify right side
    13,776.48x = 154,213,642.77
  5. Step 5: Solve for x
    x = 154,213,642.77/13,776.48
  6. Step 6: Final answer
    x = 11,193.98

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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.