Home / 14,007.21-21,017.36-6,987.76

Finding the Fourth Proportional to 14,007.21, 21,017.36 and 6,987.76

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Solution

The fourth proportional to 14,007.21, 21,017.36 and 6,987.76 is: 10,484.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,007.21 : 21,017.36 = 6,987.76 : x
  2. Step 2: Convert to fraction form
    14,007.21/21,017.36 = 6,987.76/x
  3. Step 3: Cross multiply
    14,007.21x = 21,017.36 × 6,987.76
  4. Step 4: Simplify right side
    14,007.21x = 146,864,267.51
  5. Step 5: Solve for x
    x = 146,864,267.51/14,007.21
  6. Step 6: Final answer
    x = 10,484.91

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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.