Home / 13,547.12-18,695.01-8,831.40

Finding the Fourth Proportional to 13,547.12, 18,695.01 and 8,831.40

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Solution

The fourth proportional to 13,547.12, 18,695.01 and 8,831.40 is: 12,187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.12 : 18,695.01 = 8,831.40 : x
  2. Step 2: Convert to fraction form
    13,547.12/18,695.01 = 8,831.40/x
  3. Step 3: Cross multiply
    13,547.12x = 18,695.01 × 8,831.40
  4. Step 4: Simplify right side
    13,547.12x = 165,103,074.33
  5. Step 5: Solve for x
    x = 165,103,074.33/13,547.12
  6. Step 6: Final answer
    x = 12,187.32

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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.