Home / 13,565.07-18,719.35-7,515.06

Finding the Fourth Proportional to 13,565.07, 18,719.35 and 7,515.06

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Solution

The fourth proportional to 13,565.07, 18,719.35 and 7,515.06 is: 10,370.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.07 : 18,719.35 = 7,515.06 : x
  2. Step 2: Convert to fraction form
    13,565.07/18,719.35 = 7,515.06/x
  3. Step 3: Cross multiply
    13,565.07x = 18,719.35 × 7,515.06
  4. Step 4: Simplify right side
    13,565.07x = 140,677,018.02
  5. Step 5: Solve for x
    x = 140,677,018.02/13,565.07
  6. Step 6: Final answer
    x = 10,370.54

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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.