Home / 21,898.04-30,208.47-12,941.21

Finding the Fourth Proportional to 21,898.04, 30,208.47 and 12,941.21

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Solution

The fourth proportional to 21,898.04, 30,208.47 and 12,941.21 is: 17,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.04 : 30,208.47 = 12,941.21 : x
  2. Step 2: Convert to fraction form
    21,898.04/30,208.47 = 12,941.21/x
  3. Step 3: Cross multiply
    21,898.04x = 30,208.47 × 12,941.21
  4. Step 4: Simplify right side
    21,898.04x = 390,934,154.05
  5. Step 5: Solve for x
    x = 390,934,154.05/21,898.04
  6. Step 6: Final answer
    x = 17,852.47

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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.