Home / 15,930.54-21,970.98-13,368.24

Finding the Fourth Proportional to 15,930.54, 21,970.98 and 13,368.24

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Solution

The fourth proportional to 15,930.54, 21,970.98 and 13,368.24 is: 18,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.54 : 21,970.98 = 13,368.24 : x
  2. Step 2: Convert to fraction form
    15,930.54/21,970.98 = 13,368.24/x
  3. Step 3: Cross multiply
    15,930.54x = 21,970.98 × 13,368.24
  4. Step 4: Simplify right side
    15,930.54x = 293,713,333.68
  5. Step 5: Solve for x
    x = 293,713,333.68/15,930.54
  6. Step 6: Final answer
    x = 18,437.12

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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.