Home / 39,985.12-59,987.40-13,702.24

Finding the Fourth Proportional to 39,985.12, 59,987.40 and 13,702.24

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Solution

The fourth proportional to 39,985.12, 59,987.40 and 13,702.24 is: 20,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.12 : 59,987.40 = 13,702.24 : x
  2. Step 2: Convert to fraction form
    39,985.12/59,987.40 = 13,702.24/x
  3. Step 3: Cross multiply
    39,985.12x = 59,987.40 × 13,702.24
  4. Step 4: Simplify right side
    39,985.12x = 821,961,751.78
  5. Step 5: Solve for x
    x = 821,961,751.78/39,985.12
  6. Step 6: Final answer
    x = 20,556.69

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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.