Home / 21,904.69-30,217.93-14,347.75

Finding the Fourth Proportional to 21,904.69, 30,217.93 and 14,347.75

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Solution

The fourth proportional to 21,904.69, 30,217.93 and 14,347.75 is: 19,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.69 : 30,217.93 = 14,347.75 : x
  2. Step 2: Convert to fraction form
    21,904.69/30,217.93 = 14,347.75/x
  3. Step 3: Cross multiply
    21,904.69x = 30,217.93 × 14,347.75
  4. Step 4: Simplify right side
    21,904.69x = 433,559,305.16
  5. Step 5: Solve for x
    x = 433,559,305.16/21,904.69
  6. Step 6: Final answer
    x = 19,792.99

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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.