Home / 39,987.42-59,965.64-13,328.24

Finding the Fourth Proportional to 39,987.42, 59,965.64 and 13,328.24

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Solution

The fourth proportional to 39,987.42, 59,965.64 and 13,328.24 is: 19,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.42 : 59,965.64 = 13,328.24 : x
  2. Step 2: Convert to fraction form
    39,987.42/59,965.64 = 13,328.24/x
  3. Step 3: Cross multiply
    39,987.42x = 59,965.64 × 13,328.24
  4. Step 4: Simplify right side
    39,987.42x = 799,236,075.20
  5. Step 5: Solve for x
    x = 799,236,075.20/39,987.42
  6. Step 6: Final answer
    x = 19,987.19

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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.