Home / 20,888.16-28,831.08-12,925.86

Finding the Fourth Proportional to 20,888.16, 28,831.08 and 12,925.86

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Solution

The fourth proportional to 20,888.16, 28,831.08 and 12,925.86 is: 17,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.16 : 28,831.08 = 12,925.86 : x
  2. Step 2: Convert to fraction form
    20,888.16/28,831.08 = 12,925.86/x
  3. Step 3: Cross multiply
    20,888.16x = 28,831.08 × 12,925.86
  4. Step 4: Simplify right side
    20,888.16x = 372,666,503.73
  5. Step 5: Solve for x
    x = 372,666,503.73/20,888.16
  6. Step 6: Final answer
    x = 17,841.04

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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.