Home / 15,572.50-21,490.55-8,857.95

Finding the Fourth Proportional to 15,572.50, 21,490.55 and 8,857.95

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Solution

The fourth proportional to 15,572.50, 21,490.55 and 8,857.95 is: 12,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.50 : 21,490.55 = 8,857.95 : x
  2. Step 2: Convert to fraction form
    15,572.50/21,490.55 = 8,857.95/x
  3. Step 3: Cross multiply
    15,572.50x = 21,490.55 × 8,857.95
  4. Step 4: Simplify right side
    15,572.50x = 190,362,248.95
  5. Step 5: Solve for x
    x = 190,362,248.95/15,572.50
  6. Step 6: Final answer
    x = 12,224.26

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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.