Home / 28,424.19-39,225.63-15,677.85

Finding the Fourth Proportional to 28,424.19, 39,225.63 and 15,677.85

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Solution

The fourth proportional to 28,424.19, 39,225.63 and 15,677.85 is: 21,635.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.19 : 39,225.63 = 15,677.85 : x
  2. Step 2: Convert to fraction form
    28,424.19/39,225.63 = 15,677.85/x
  3. Step 3: Cross multiply
    28,424.19x = 39,225.63 × 15,677.85
  4. Step 4: Simplify right side
    28,424.19x = 614,973,543.30
  5. Step 5: Solve for x
    x = 614,973,543.30/28,424.19
  6. Step 6: Final answer
    x = 21,635.57

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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.