Home / 13,113.60-19,671.36-5,320.32

Finding the Fourth Proportional to 13,113.60, 19,671.36 and 5,320.32

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Solution

The fourth proportional to 13,113.60, 19,671.36 and 5,320.32 is: 7,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.60 : 19,671.36 = 5,320.32 : x
  2. Step 2: Convert to fraction form
    13,113.60/19,671.36 = 5,320.32/x
  3. Step 3: Cross multiply
    13,113.60x = 19,671.36 × 5,320.32
  4. Step 4: Simplify right side
    13,113.60x = 104,657,930.04
  5. Step 5: Solve for x
    x = 104,657,930.04/13,113.60
  6. Step 6: Final answer
    x = 7,980.87

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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.