Home / 28,447.76-42,663.74-8,715.35

Finding the Fourth Proportional to 28,447.76, 42,663.74 and 8,715.35

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Solution

The fourth proportional to 28,447.76, 42,663.74 and 8,715.35 is: 13,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.76 : 42,663.74 = 8,715.35 : x
  2. Step 2: Convert to fraction form
    28,447.76/42,663.74 = 8,715.35/x
  3. Step 3: Cross multiply
    28,447.76x = 42,663.74 × 8,715.35
  4. Step 4: Simplify right side
    28,447.76x = 371,829,169.51
  5. Step 5: Solve for x
    x = 371,829,169.51/28,447.76
  6. Step 6: Final answer
    x = 13,070.60

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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.