Home / 13,987.52-19,303.16-7,700.28

Finding the Fourth Proportional to 13,987.52, 19,303.16 and 7,700.28

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Solution

The fourth proportional to 13,987.52, 19,303.16 and 7,700.28 is: 10,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.52 : 19,303.16 = 7,700.28 : x
  2. Step 2: Convert to fraction form
    13,987.52/19,303.16 = 7,700.28/x
  3. Step 3: Cross multiply
    13,987.52x = 19,303.16 × 7,700.28
  4. Step 4: Simplify right side
    13,987.52x = 148,639,736.88
  5. Step 5: Solve for x
    x = 148,639,736.88/13,987.52
  6. Step 6: Final answer
    x = 10,626.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.