Home / 28,556.31-39,407.76-15,810.38

Finding the Fourth Proportional to 28,556.31, 39,407.76 and 15,810.38

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Solution

The fourth proportional to 28,556.31, 39,407.76 and 15,810.38 is: 21,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.31 : 39,407.76 = 15,810.38 : x
  2. Step 2: Convert to fraction form
    28,556.31/39,407.76 = 15,810.38/x
  3. Step 3: Cross multiply
    28,556.31x = 39,407.76 × 15,810.38
  4. Step 4: Simplify right side
    28,556.31x = 623,051,463.51
  5. Step 5: Solve for x
    x = 623,051,463.51/28,556.31
  6. Step 6: Final answer
    x = 21,818.35

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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.