Home / 13,001.40-17,938.80-7,697.52

Finding the Fourth Proportional to 13,001.40, 17,938.80 and 7,697.52

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Solution

The fourth proportional to 13,001.40, 17,938.80 and 7,697.52 is: 10,620.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.40 : 17,938.80 = 7,697.52 : x
  2. Step 2: Convert to fraction form
    13,001.40/17,938.80 = 7,697.52/x
  3. Step 3: Cross multiply
    13,001.40x = 17,938.80 × 7,697.52
  4. Step 4: Simplify right side
    13,001.40x = 138,084,271.78
  5. Step 5: Solve for x
    x = 138,084,271.78/13,001.40
  6. Step 6: Final answer
    x = 10,620.72

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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.