Home / 35,987.28-53,981.88-12,615.12

Finding the Fourth Proportional to 35,987.28, 53,981.88 and 12,615.12

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Solution

The fourth proportional to 35,987.28, 53,981.88 and 12,615.12 is: 18,923.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,987.28 : 53,981.88 = 12,615.12 : x
  2. Step 2: Convert to fraction form
    35,987.28/53,981.88 = 12,615.12/x
  3. Step 3: Cross multiply
    35,987.28x = 53,981.88 × 12,615.12
  4. Step 4: Simplify right side
    35,987.28x = 680,987,894.03
  5. Step 5: Solve for x
    x = 680,987,894.03/35,987.28
  6. Step 6: Final answer
    x = 18,923.02

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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.