Home / 12,570.74-18,858.54-4,785.02

Finding the Fourth Proportional to 12,570.74, 18,858.54 and 4,785.02

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Solution

The fourth proportional to 12,570.74, 18,858.54 and 4,785.02 is: 7,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.74 : 18,858.54 = 4,785.02 : x
  2. Step 2: Convert to fraction form
    12,570.74/18,858.54 = 4,785.02/x
  3. Step 3: Cross multiply
    12,570.74x = 18,858.54 × 4,785.02
  4. Step 4: Simplify right side
    12,570.74x = 90,238,491.07
  5. Step 5: Solve for x
    x = 90,238,491.07/12,570.74
  6. Step 6: Final answer
    x = 7,178.45

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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.