Home / 18,688.80-25,790.76-10,305.24

Finding the Fourth Proportional to 18,688.80, 25,790.76 and 10,305.24

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Solution

The fourth proportional to 18,688.80, 25,790.76 and 10,305.24 is: 14,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.80 : 25,790.76 = 10,305.24 : x
  2. Step 2: Convert to fraction form
    18,688.80/25,790.76 = 10,305.24/x
  3. Step 3: Cross multiply
    18,688.80x = 25,790.76 × 10,305.24
  4. Step 4: Simplify right side
    18,688.80x = 265,779,971.58
  5. Step 5: Solve for x
    x = 265,779,971.58/18,688.80
  6. Step 6: Final answer
    x = 14,221.35

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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.