Home / 27,999.95-38,639.93-15,424.70

Finding the Fourth Proportional to 27,999.95, 38,639.93 and 15,424.70

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Solution

The fourth proportional to 27,999.95, 38,639.93 and 15,424.70 is: 21,286.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.95 : 38,639.93 = 15,424.70 : x
  2. Step 2: Convert to fraction form
    27,999.95/38,639.93 = 15,424.70/x
  3. Step 3: Cross multiply
    27,999.95x = 38,639.93 × 15,424.70
  4. Step 4: Simplify right side
    27,999.95x = 596,009,328.27
  5. Step 5: Solve for x
    x = 596,009,328.27/27,999.95
  6. Step 6: Final answer
    x = 21,286.09

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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.