Home / 13,283.32-18,330.56-7,905.74

Finding the Fourth Proportional to 13,283.32, 18,330.56 and 7,905.74

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Solution

The fourth proportional to 13,283.32, 18,330.56 and 7,905.74 is: 10,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.32 : 18,330.56 = 7,905.74 : x
  2. Step 2: Convert to fraction form
    13,283.32/18,330.56 = 7,905.74/x
  3. Step 3: Cross multiply
    13,283.32x = 18,330.56 × 7,905.74
  4. Step 4: Simplify right side
    13,283.32x = 144,916,641.41
  5. Step 5: Solve for x
    x = 144,916,641.41/13,283.32
  6. Step 6: Final answer
    x = 10,909.67

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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.