Home / 28,521.60-42,759.30-11,894.10

Finding the Fourth Proportional to 28,521.60, 42,759.30 and 11,894.10

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Solution

The fourth proportional to 28,521.60, 42,759.30 and 11,894.10 is: 17,831.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.60 : 42,759.30 = 11,894.10 : x
  2. Step 2: Convert to fraction form
    28,521.60/42,759.30 = 11,894.10/x
  3. Step 3: Cross multiply
    28,521.60x = 42,759.30 × 11,894.10
  4. Step 4: Simplify right side
    28,521.60x = 508,583,390.13
  5. Step 5: Solve for x
    x = 508,583,390.13/28,521.60
  6. Step 6: Final answer
    x = 17,831.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.