Home / 21,929.40-30,254.68-12,492.48

Finding the Fourth Proportional to 21,929.40, 30,254.68 and 12,492.48

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Solution

The fourth proportional to 21,929.40, 30,254.68 and 12,492.48 is: 17,235.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.40 : 30,254.68 = 12,492.48 : x
  2. Step 2: Convert to fraction form
    21,929.40/30,254.68 = 12,492.48/x
  3. Step 3: Cross multiply
    21,929.40x = 30,254.68 × 12,492.48
  4. Step 4: Simplify right side
    21,929.40x = 377,955,984.81
  5. Step 5: Solve for x
    x = 377,955,984.81/21,929.40
  6. Step 6: Final answer
    x = 17,235.13

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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.