Home / 13,263.78-19,877.04-10,478.28

Finding the Fourth Proportional to 13,263.78, 19,877.04 and 10,478.28

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Solution

The fourth proportional to 13,263.78, 19,877.04 and 10,478.28 is: 15,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.78 : 19,877.04 = 10,478.28 : x
  2. Step 2: Convert to fraction form
    13,263.78/19,877.04 = 10,478.28/x
  3. Step 3: Cross multiply
    13,263.78x = 19,877.04 × 10,478.28
  4. Step 4: Simplify right side
    13,263.78x = 208,277,190.69
  5. Step 5: Solve for x
    x = 208,277,190.69/13,263.78
  6. Step 6: Final answer
    x = 15,702.70

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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.