Home / 15,750.40-23,660.80-13,158.40

Finding the Fourth Proportional to 15,750.40, 23,660.80 and 13,158.40

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Solution

The fourth proportional to 15,750.40, 23,660.80 and 13,158.40 is: 19,767.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,750.40 : 23,660.80 = 13,158.40 : x
  2. Step 2: Convert to fraction form
    15,750.40/23,660.80 = 13,158.40/x
  3. Step 3: Cross multiply
    15,750.40x = 23,660.80 × 13,158.40
  4. Step 4: Simplify right side
    15,750.40x = 311,338,270.72
  5. Step 5: Solve for x
    x = 311,338,270.72/15,750.40
  6. Step 6: Final answer
    x = 19,767.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.