Home / 25,386.30-35,017.83-18,689.22

Finding the Fourth Proportional to 25,386.30, 35,017.83 and 18,689.22

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Solution

The fourth proportional to 25,386.30, 35,017.83 and 18,689.22 is: 25,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,386.30 : 35,017.83 = 18,689.22 : x
  2. Step 2: Convert to fraction form
    25,386.30/35,017.83 = 18,689.22/x
  3. Step 3: Cross multiply
    25,386.30x = 35,017.83 × 18,689.22
  4. Step 4: Simplify right side
    25,386.30x = 654,455,928.79
  5. Step 5: Solve for x
    x = 654,455,928.79/25,386.30
  6. Step 6: Final answer
    x = 25,779.89

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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.