Home / 21,788.22-30,070.26-12,358.50

Finding the Fourth Proportional to 21,788.22, 30,070.26 and 12,358.50

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Solution

The fourth proportional to 21,788.22, 30,070.26 and 12,358.50 is: 17,056.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.22 : 30,070.26 = 12,358.50 : x
  2. Step 2: Convert to fraction form
    21,788.22/30,070.26 = 12,358.50/x
  3. Step 3: Cross multiply
    21,788.22x = 30,070.26 × 12,358.50
  4. Step 4: Simplify right side
    21,788.22x = 371,623,308.21
  5. Step 5: Solve for x
    x = 371,623,308.21/21,788.22
  6. Step 6: Final answer
    x = 17,056.16

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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.