Home / 13,248.15-19,870.09-3,386.90

Finding the Fourth Proportional to 13,248.15, 19,870.09 and 3,386.90

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Solution

The fourth proportional to 13,248.15, 19,870.09 and 3,386.90 is: 5,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,248.15 : 19,870.09 = 3,386.90 : x
  2. Step 2: Convert to fraction form
    13,248.15/19,870.09 = 3,386.90/x
  3. Step 3: Cross multiply
    13,248.15x = 19,870.09 × 3,386.90
  4. Step 4: Simplify right side
    13,248.15x = 67,298,007.82
  5. Step 5: Solve for x
    x = 67,298,007.82/13,248.15
  6. Step 6: Final answer
    x = 5,079.80

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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.