Home / 15,720.68-21,688.26-10,054.13

Finding the Fourth Proportional to 15,720.68, 21,688.26 and 10,054.13

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Solution

The fourth proportional to 15,720.68, 21,688.26 and 10,054.13 is: 13,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.68 : 21,688.26 = 10,054.13 : x
  2. Step 2: Convert to fraction form
    15,720.68/21,688.26 = 10,054.13/x
  3. Step 3: Cross multiply
    15,720.68x = 21,688.26 × 10,054.13
  4. Step 4: Simplify right side
    15,720.68x = 218,056,439.37
  5. Step 5: Solve for x
    x = 218,056,439.37/15,720.68
  6. Step 6: Final answer
    x = 13,870.67

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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.