Home / 28,545.35-42,828.14-12,748.93

Finding the Fourth Proportional to 28,545.35, 42,828.14 and 12,748.93

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Solution

The fourth proportional to 28,545.35, 42,828.14 and 12,748.93 is: 19,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.35 : 42,828.14 = 12,748.93 : x
  2. Step 2: Convert to fraction form
    28,545.35/42,828.14 = 12,748.93/x
  3. Step 3: Cross multiply
    28,545.35x = 42,828.14 × 12,748.93
  4. Step 4: Simplify right side
    28,545.35x = 546,012,883.69
  5. Step 5: Solve for x
    x = 546,012,883.69/28,545.35
  6. Step 6: Final answer
    x = 19,127.91

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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.