Home / 21,756.76-30,024.34-12,325.32

Finding the Fourth Proportional to 21,756.76, 30,024.34 and 12,325.32

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Solution

The fourth proportional to 21,756.76, 30,024.34 and 12,325.32 is: 17,008.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.76 : 30,024.34 = 12,325.32 : x
  2. Step 2: Convert to fraction form
    21,756.76/30,024.34 = 12,325.32/x
  3. Step 3: Cross multiply
    21,756.76x = 30,024.34 × 12,325.32
  4. Step 4: Simplify right side
    21,756.76x = 370,059,598.29
  5. Step 5: Solve for x
    x = 370,059,598.29/21,756.76
  6. Step 6: Final answer
    x = 17,008.95

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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.