Home / 13,555.95-18,707.61-7,587.60

Finding the Fourth Proportional to 13,555.95, 18,707.61 and 7,587.60

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Solution

The fourth proportional to 13,555.95, 18,707.61 and 7,587.60 is: 10,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.95 : 18,707.61 = 7,587.60 : x
  2. Step 2: Convert to fraction form
    13,555.95/18,707.61 = 7,587.60/x
  3. Step 3: Cross multiply
    13,555.95x = 18,707.61 × 7,587.60
  4. Step 4: Simplify right side
    13,555.95x = 141,945,861.64
  5. Step 5: Solve for x
    x = 141,945,861.64/13,555.95
  6. Step 6: Final answer
    x = 10,471.11

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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.