Home / 13,955.56-19,259.53-7,987.10

Finding the Fourth Proportional to 13,955.56, 19,259.53 and 7,987.10

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Solution

The fourth proportional to 13,955.56, 19,259.53 and 7,987.10 is: 11,022.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.56 : 19,259.53 = 7,987.10 : x
  2. Step 2: Convert to fraction form
    13,955.56/19,259.53 = 7,987.10/x
  3. Step 3: Cross multiply
    13,955.56x = 19,259.53 × 7,987.10
  4. Step 4: Simplify right side
    13,955.56x = 153,827,829.06
  5. Step 5: Solve for x
    x = 153,827,829.06/13,955.56
  6. Step 6: Final answer
    x = 11,022.69

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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.