Home / 25,689.12-35,461.91-15,620.79

Finding the Fourth Proportional to 25,689.12, 35,461.91 and 15,620.79

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Solution

The fourth proportional to 25,689.12, 35,461.91 and 15,620.79 is: 21,563.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,689.12 : 35,461.91 = 15,620.79 : x
  2. Step 2: Convert to fraction form
    25,689.12/35,461.91 = 15,620.79/x
  3. Step 3: Cross multiply
    25,689.12x = 35,461.91 × 15,620.79
  4. Step 4: Simplify right side
    25,689.12x = 553,943,077.47
  5. Step 5: Solve for x
    x = 553,943,077.47/25,689.12
  6. Step 6: Final answer
    x = 21,563.34

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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.