Home / 18,688.76-25,790.34-10,305.26

Finding the Fourth Proportional to 18,688.76, 25,790.34 and 10,305.26

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Solution

The fourth proportional to 18,688.76, 25,790.34 and 10,305.26 is: 14,221.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.76 : 25,790.34 = 10,305.26 : x
  2. Step 2: Convert to fraction form
    18,688.76/25,790.34 = 10,305.26/x
  3. Step 3: Cross multiply
    18,688.76x = 25,790.34 × 10,305.26
  4. Step 4: Simplify right side
    18,688.76x = 265,776,159.19
  5. Step 5: Solve for x
    x = 265,776,159.19/18,688.76
  6. Step 6: Final answer
    x = 14,221.18

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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.