Home / 28,557.04-39,409.60-15,981.76

Finding the Fourth Proportional to 28,557.04, 39,409.60 and 15,981.76

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Solution

The fourth proportional to 28,557.04, 39,409.60 and 15,981.76 is: 22,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.04 : 39,409.60 = 15,981.76 : x
  2. Step 2: Convert to fraction form
    28,557.04/39,409.60 = 15,981.76/x
  3. Step 3: Cross multiply
    28,557.04x = 39,409.60 × 15,981.76
  4. Step 4: Simplify right side
    28,557.04x = 629,834,768.90
  5. Step 5: Solve for x
    x = 629,834,768.90/28,557.04
  6. Step 6: Final answer
    x = 22,055.32

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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.