Home / 21,038.03-29,031.52-11,477.69

Finding the Fourth Proportional to 21,038.03, 29,031.52 and 11,477.69

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Solution

The fourth proportional to 21,038.03, 29,031.52 and 11,477.69 is: 15,838.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.03 : 29,031.52 = 11,477.69 : x
  2. Step 2: Convert to fraction form
    21,038.03/29,031.52 = 11,477.69/x
  3. Step 3: Cross multiply
    21,038.03x = 29,031.52 × 11,477.69
  4. Step 4: Simplify right side
    21,038.03x = 333,214,786.79
  5. Step 5: Solve for x
    x = 333,214,786.79/21,038.03
  6. Step 6: Final answer
    x = 15,838.69

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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.