Home / 28,368.36-42,545.52-8,645.40

Finding the Fourth Proportional to 28,368.36, 42,545.52 and 8,645.40

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Solution

The fourth proportional to 28,368.36, 42,545.52 and 8,645.40 is: 12,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.36 : 42,545.52 = 8,645.40 : x
  2. Step 2: Convert to fraction form
    28,368.36/42,545.52 = 8,645.40/x
  3. Step 3: Cross multiply
    28,368.36x = 42,545.52 × 8,645.40
  4. Step 4: Simplify right side
    28,368.36x = 367,823,038.61
  5. Step 5: Solve for x
    x = 367,823,038.61/28,368.36
  6. Step 6: Final answer
    x = 12,965.96

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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.