Home / 13,347.32-18,411.30-8,565.55

Finding the Fourth Proportional to 13,347.32, 18,411.30 and 8,565.55

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Solution

The fourth proportional to 13,347.32, 18,411.30 and 8,565.55 is: 11,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.32 : 18,411.30 = 8,565.55 : x
  2. Step 2: Convert to fraction form
    13,347.32/18,411.30 = 8,565.55/x
  3. Step 3: Cross multiply
    13,347.32x = 18,411.30 × 8,565.55
  4. Step 4: Simplify right side
    13,347.32x = 157,702,864.69
  5. Step 5: Solve for x
    x = 157,702,864.69/13,347.32
  6. Step 6: Final answer
    x = 11,815.33

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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.