Home / 15,639.10-21,582.27-8,565.53

Finding the Fourth Proportional to 15,639.10, 21,582.27 and 8,565.53

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Solution

The fourth proportional to 15,639.10, 21,582.27 and 8,565.53 is: 11,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.10 : 21,582.27 = 8,565.53 : x
  2. Step 2: Convert to fraction form
    15,639.10/21,582.27 = 8,565.53/x
  3. Step 3: Cross multiply
    15,639.10x = 21,582.27 × 8,565.53
  4. Step 4: Simplify right side
    15,639.10x = 184,863,473.24
  5. Step 5: Solve for x
    x = 184,863,473.24/15,639.10
  6. Step 6: Final answer
    x = 11,820.60

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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.