Home / 15,572.35-21,490.32-8,858.95

Finding the Fourth Proportional to 15,572.35, 21,490.32 and 8,858.95

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Solution

The fourth proportional to 15,572.35, 21,490.32 and 8,858.95 is: 12,225.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.35 : 21,490.32 = 8,858.95 : x
  2. Step 2: Convert to fraction form
    15,572.35/21,490.32 = 8,858.95/x
  3. Step 3: Cross multiply
    15,572.35x = 21,490.32 × 8,858.95
  4. Step 4: Simplify right side
    15,572.35x = 190,381,670.36
  5. Step 5: Solve for x
    x = 190,381,670.36/15,572.35
  6. Step 6: Final answer
    x = 12,225.62

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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.