Home / 21,330.63-31,926.23-19,284.42

Finding the Fourth Proportional to 21,330.63, 31,926.23 and 19,284.42

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Solution

The fourth proportional to 21,330.63, 31,926.23 and 19,284.42 is: 28,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.63 : 31,926.23 = 19,284.42 : x
  2. Step 2: Convert to fraction form
    21,330.63/31,926.23 = 19,284.42/x
  3. Step 3: Cross multiply
    21,330.63x = 31,926.23 × 19,284.42
  4. Step 4: Simplify right side
    21,330.63x = 615,678,828.34
  5. Step 5: Solve for x
    x = 615,678,828.34/21,330.63
  6. Step 6: Final answer
    x = 28,863.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.