Home / 13,271.04-18,313.56-8,557.92

Finding the Fourth Proportional to 13,271.04, 18,313.56 and 8,557.92

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Solution

The fourth proportional to 13,271.04, 18,313.56 and 8,557.92 is: 11,809.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.04 : 18,313.56 = 8,557.92 : x
  2. Step 2: Convert to fraction form
    13,271.04/18,313.56 = 8,557.92/x
  3. Step 3: Cross multiply
    13,271.04x = 18,313.56 × 8,557.92
  4. Step 4: Simplify right side
    13,271.04x = 156,725,981.40
  5. Step 5: Solve for x
    x = 156,725,981.40/13,271.04
  6. Step 6: Final answer
    x = 11,809.62

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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.