Home / 28,545.28-42,762.51-21,035.21

Finding the Fourth Proportional to 28,545.28, 42,762.51 and 21,035.21

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Solution

The fourth proportional to 28,545.28, 42,762.51 and 21,035.21 is: 31,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.28 : 42,762.51 = 21,035.21 : x
  2. Step 2: Convert to fraction form
    28,545.28/42,762.51 = 21,035.21/x
  3. Step 3: Cross multiply
    28,545.28x = 42,762.51 × 21,035.21
  4. Step 4: Simplify right side
    28,545.28x = 899,518,377.98
  5. Step 5: Solve for x
    x = 899,518,377.98/28,545.28
  6. Step 6: Final answer
    x = 31,511.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.