Home / 15,639.05-21,581.96-8,565.48

Finding the Fourth Proportional to 15,639.05, 21,581.96 and 8,565.48

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Solution

The fourth proportional to 15,639.05, 21,581.96 and 8,565.48 is: 11,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.05 : 21,581.96 = 8,565.48 : x
  2. Step 2: Convert to fraction form
    15,639.05/21,581.96 = 8,565.48/x
  3. Step 3: Cross multiply
    15,639.05x = 21,581.96 × 8,565.48
  4. Step 4: Simplify right side
    15,639.05x = 184,859,803.91
  5. Step 5: Solve for x
    x = 184,859,803.91/15,639.05
  6. Step 6: Final answer
    x = 11,820.40

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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.