Home / 25,740.05-35,515.80-15,125.81

Finding the Fourth Proportional to 25,740.05, 35,515.80 and 15,125.81

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Solution

The fourth proportional to 25,740.05, 35,515.80 and 15,125.81 is: 20,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,740.05 : 35,515.80 = 15,125.81 : x
  2. Step 2: Convert to fraction form
    25,740.05/35,515.80 = 15,125.81/x
  3. Step 3: Cross multiply
    25,740.05x = 35,515.80 × 15,125.81
  4. Step 4: Simplify right side
    25,740.05x = 537,205,065.22
  5. Step 5: Solve for x
    x = 537,205,065.22/25,740.05
  6. Step 6: Final answer
    x = 20,870.40

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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.