Home / 28,312.83-39,070.76-15,737.31

Finding the Fourth Proportional to 28,312.83, 39,070.76 and 15,737.31

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Solution

The fourth proportional to 28,312.83, 39,070.76 and 15,737.31 is: 21,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.83 : 39,070.76 = 15,737.31 : x
  2. Step 2: Convert to fraction form
    28,312.83/39,070.76 = 15,737.31/x
  3. Step 3: Cross multiply
    28,312.83x = 39,070.76 × 15,737.31
  4. Step 4: Simplify right side
    28,312.83x = 614,868,583.37
  5. Step 5: Solve for x
    x = 614,868,583.37/28,312.83
  6. Step 6: Final answer
    x = 21,716.96

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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.