Home / 13,987.10-19,302.12-7,699.46

Finding the Fourth Proportional to 13,987.10, 19,302.12 and 7,699.46

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Solution

The fourth proportional to 13,987.10, 19,302.12 and 7,699.46 is: 10,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.10 : 19,302.12 = 7,699.46 : x
  2. Step 2: Convert to fraction form
    13,987.10/19,302.12 = 7,699.46/x
  3. Step 3: Cross multiply
    13,987.10x = 19,302.12 × 7,699.46
  4. Step 4: Simplify right side
    13,987.10x = 148,615,900.86
  5. Step 5: Solve for x
    x = 148,615,900.86/13,987.10
  6. Step 6: Final answer
    x = 10,625.21

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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.