Home / 28,507.23-39,339.92-15,931.98

Finding the Fourth Proportional to 28,507.23, 39,339.92 and 15,931.98

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Solution

The fourth proportional to 28,507.23, 39,339.92 and 15,931.98 is: 21,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.23 : 39,339.92 = 15,931.98 : x
  2. Step 2: Convert to fraction form
    28,507.23/39,339.92 = 15,931.98/x
  3. Step 3: Cross multiply
    28,507.23x = 39,339.92 × 15,931.98
  4. Step 4: Simplify right side
    28,507.23x = 626,762,738.98
  5. Step 5: Solve for x
    x = 626,762,738.98/28,507.23
  6. Step 6: Final answer
    x = 21,986.10

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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.