Home / 21,427.50-29,582.91-13,988.46

Finding the Fourth Proportional to 21,427.50, 29,582.91 and 13,988.46

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Solution

The fourth proportional to 21,427.50, 29,582.91 and 13,988.46 is: 19,312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.50 : 29,582.91 = 13,988.46 : x
  2. Step 2: Convert to fraction form
    21,427.50/29,582.91 = 13,988.46/x
  3. Step 3: Cross multiply
    21,427.50x = 29,582.91 × 13,988.46
  4. Step 4: Simplify right side
    21,427.50x = 413,819,353.22
  5. Step 5: Solve for x
    x = 413,819,353.22/21,427.50
  6. Step 6: Final answer
    x = 19,312.54

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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.