Home / 21,802.95-30,088.71-15,440.94

Finding the Fourth Proportional to 21,802.95, 30,088.71 and 15,440.94

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Solution

The fourth proportional to 21,802.95, 30,088.71 and 15,440.94 is: 21,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.95 : 30,088.71 = 15,440.94 : x
  2. Step 2: Convert to fraction form
    21,802.95/30,088.71 = 15,440.94/x
  3. Step 3: Cross multiply
    21,802.95x = 30,088.71 × 15,440.94
  4. Step 4: Simplify right side
    21,802.95x = 464,597,965.79
  5. Step 5: Solve for x
    x = 464,597,965.79/21,802.95
  6. Step 6: Final answer
    x = 21,308.95

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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.