Home / 28,677.23-39,573.29-15,931.30

Finding the Fourth Proportional to 28,677.23, 39,573.29 and 15,931.30

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Solution

The fourth proportional to 28,677.23, 39,573.29 and 15,931.30 is: 21,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.23 : 39,573.29 = 15,931.30 : x
  2. Step 2: Convert to fraction form
    28,677.23/39,573.29 = 15,931.30/x
  3. Step 3: Cross multiply
    28,677.23x = 39,573.29 × 15,931.30
  4. Step 4: Simplify right side
    28,677.23x = 630,453,954.98
  5. Step 5: Solve for x
    x = 630,453,954.98/28,677.23
  6. Step 6: Final answer
    x = 21,984.48

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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.