Home / 15,444.61-21,302.31-9,780.28

Finding the Fourth Proportional to 15,444.61, 21,302.31 and 9,780.28

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Solution

The fourth proportional to 15,444.61, 21,302.31 and 9,780.28 is: 13,489.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.61 : 21,302.31 = 9,780.28 : x
  2. Step 2: Convert to fraction form
    15,444.61/21,302.31 = 9,780.28/x
  3. Step 3: Cross multiply
    15,444.61x = 21,302.31 × 9,780.28
  4. Step 4: Simplify right side
    15,444.61x = 208,342,556.45
  5. Step 5: Solve for x
    x = 208,342,556.45/15,444.61
  6. Step 6: Final answer
    x = 13,489.66

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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.