Home / 15,432.41-21,296.63-8,717.72

Finding the Fourth Proportional to 15,432.41, 21,296.63 and 8,717.72

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Solution

The fourth proportional to 15,432.41, 21,296.63 and 8,717.72 is: 12,030.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.41 : 21,296.63 = 8,717.72 : x
  2. Step 2: Convert to fraction form
    15,432.41/21,296.63 = 8,717.72/x
  3. Step 3: Cross multiply
    15,432.41x = 21,296.63 × 8,717.72
  4. Step 4: Simplify right side
    15,432.41x = 185,657,907.21
  5. Step 5: Solve for x
    x = 185,657,907.21/15,432.41
  6. Step 6: Final answer
    x = 12,030.39

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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.