Home / 13,005.90-19,510.86-4,238.76

Finding the Fourth Proportional to 13,005.90, 19,510.86 and 4,238.76

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Solution

The fourth proportional to 13,005.90, 19,510.86 and 4,238.76 is: 6,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.90 : 19,510.86 = 4,238.76 : x
  2. Step 2: Convert to fraction form
    13,005.90/19,510.86 = 4,238.76/x
  3. Step 3: Cross multiply
    13,005.90x = 19,510.86 × 4,238.76
  4. Step 4: Simplify right side
    13,005.90x = 82,701,852.93
  5. Step 5: Solve for x
    x = 82,701,852.93/13,005.90
  6. Step 6: Final answer
    x = 6,358.80

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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.