Home / 17,920.08-26,881.20-4,772.40

Finding the Fourth Proportional to 17,920.08, 26,881.20 and 4,772.40

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Solution

The fourth proportional to 17,920.08, 26,881.20 and 4,772.40 is: 7,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.08 : 26,881.20 = 4,772.40 : x
  2. Step 2: Convert to fraction form
    17,920.08/26,881.20 = 4,772.40/x
  3. Step 3: Cross multiply
    17,920.08x = 26,881.20 × 4,772.40
  4. Step 4: Simplify right side
    17,920.08x = 128,287,838.88
  5. Step 5: Solve for x
    x = 128,287,838.88/17,920.08
  6. Step 6: Final answer
    x = 7,158.89

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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.