Home / 19,675.32-29,519.48-7,985.40

Finding the Fourth Proportional to 19,675.32, 29,519.48 and 7,985.40

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Solution

The fourth proportional to 19,675.32, 29,519.48 and 7,985.40 is: 11,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,675.32 : 29,519.48 = 7,985.40 : x
  2. Step 2: Convert to fraction form
    19,675.32/29,519.48 = 7,985.40/x
  3. Step 3: Cross multiply
    19,675.32x = 29,519.48 × 7,985.40
  4. Step 4: Simplify right side
    19,675.32x = 235,724,855.59
  5. Step 5: Solve for x
    x = 235,724,855.59/19,675.32
  6. Step 6: Final answer
    x = 11,980.74

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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.