Home / 19,745.60-29,570.40-10,491.20

Finding the Fourth Proportional to 19,745.60, 29,570.40 and 10,491.20

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Solution

The fourth proportional to 19,745.60, 29,570.40 and 10,491.20 is: 15,711.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,745.60 : 29,570.40 = 10,491.20 : x
  2. Step 2: Convert to fraction form
    19,745.60/29,570.40 = 10,491.20/x
  3. Step 3: Cross multiply
    19,745.60x = 29,570.40 × 10,491.20
  4. Step 4: Simplify right side
    19,745.60x = 310,228,980.48
  5. Step 5: Solve for x
    x = 310,228,980.48/19,745.60
  6. Step 6: Final answer
    x = 15,711.30

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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.