Home / 12,987.16-19,465.20-7,444.30

Finding the Fourth Proportional to 12,987.16, 19,465.20 and 7,444.30

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Solution

The fourth proportional to 12,987.16, 19,465.20 and 7,444.30 is: 11,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.16 : 19,465.20 = 7,444.30 : x
  2. Step 2: Convert to fraction form
    12,987.16/19,465.20 = 7,444.30/x
  3. Step 3: Cross multiply
    12,987.16x = 19,465.20 × 7,444.30
  4. Step 4: Simplify right side
    12,987.16x = 144,904,788.36
  5. Step 5: Solve for x
    x = 144,904,788.36/12,987.16
  6. Step 6: Final answer
    x = 11,157.54

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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.