Home / 13,070.40-19,615.68-5,284.80

Finding the Fourth Proportional to 13,070.40, 19,615.68 and 5,284.80

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Solution

The fourth proportional to 13,070.40, 19,615.68 and 5,284.80 is: 7,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,070.40 : 19,615.68 = 5,284.80 : x
  2. Step 2: Convert to fraction form
    13,070.40/19,615.68 = 5,284.80/x
  3. Step 3: Cross multiply
    13,070.40x = 19,615.68 × 5,284.80
  4. Step 4: Simplify right side
    13,070.40x = 103,664,945.66
  5. Step 5: Solve for x
    x = 103,664,945.66/13,070.40
  6. Step 6: Final answer
    x = 7,931.28

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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.