Home / 25,875.34-35,708.10-15,120.84

Finding the Fourth Proportional to 25,875.34, 35,708.10 and 15,120.84

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Solution

The fourth proportional to 25,875.34, 35,708.10 and 15,120.84 is: 20,866.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,875.34 : 35,708.10 = 15,120.84 : x
  2. Step 2: Convert to fraction form
    25,875.34/35,708.10 = 15,120.84/x
  3. Step 3: Cross multiply
    25,875.34x = 35,708.10 × 15,120.84
  4. Step 4: Simplify right side
    25,875.34x = 539,936,466.80
  5. Step 5: Solve for x
    x = 539,936,466.80/25,875.34
  6. Step 6: Final answer
    x = 20,866.84

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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.