Home / 28,307.09-39,062.71-15,732.65

Finding the Fourth Proportional to 28,307.09, 39,062.71 and 15,732.65

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Solution

The fourth proportional to 28,307.09, 39,062.71 and 15,732.65 is: 21,710.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.09 : 39,062.71 = 15,732.65 : x
  2. Step 2: Convert to fraction form
    28,307.09/39,062.71 = 15,732.65/x
  3. Step 3: Cross multiply
    28,307.09x = 39,062.71 × 15,732.65
  4. Step 4: Simplify right side
    28,307.09x = 614,559,944.48
  5. Step 5: Solve for x
    x = 614,559,944.48/28,307.09
  6. Step 6: Final answer
    x = 21,710.46

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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.