Home / 21,124.48-29,154-15,810

Finding the Fourth Proportional to 21,124.48, 29,154 and 15,810

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Solution

The fourth proportional to 21,124.48, 29,154 and 15,810 is: 21,819.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.48 : 29,154 = 15,810 : x
  2. Step 2: Convert to fraction form
    21,124.48/29,154 = 15,810/x
  3. Step 3: Cross multiply
    21,124.48x = 29,154 × 15,810
  4. Step 4: Simplify right side
    21,124.48x = 460,924,740
  5. Step 5: Solve for x
    x = 460,924,740/21,124.48
  6. Step 6: Final answer
    x = 21,819.46

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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.