Home / 21,283.71-31,920.42-9,430.93

Finding the Fourth Proportional to 21,283.71, 31,920.42 and 9,430.93

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Solution

The fourth proportional to 21,283.71, 31,920.42 and 9,430.93 is: 14,144.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.71 : 31,920.42 = 9,430.93 : x
  2. Step 2: Convert to fraction form
    21,283.71/31,920.42 = 9,430.93/x
  3. Step 3: Cross multiply
    21,283.71x = 31,920.42 × 9,430.93
  4. Step 4: Simplify right side
    21,283.71x = 301,039,246.59
  5. Step 5: Solve for x
    x = 301,039,246.59/21,283.71
  6. Step 6: Final answer
    x = 14,144.12

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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.