Home / 20,946.40-28,928.58-13,007.48

Finding the Fourth Proportional to 20,946.40, 28,928.58 and 13,007.48

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Solution

The fourth proportional to 20,946.40, 28,928.58 and 13,007.48 is: 17,964.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.40 : 28,928.58 = 13,007.48 : x
  2. Step 2: Convert to fraction form
    20,946.40/28,928.58 = 13,007.48/x
  3. Step 3: Cross multiply
    20,946.40x = 28,928.58 × 13,007.48
  4. Step 4: Simplify right side
    20,946.40x = 376,287,925.78
  5. Step 5: Solve for x
    x = 376,287,925.78/20,946.40
  6. Step 6: Final answer
    x = 17,964.32

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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.