Home / 15,490.13-21,381.91-9,202.50

Finding the Fourth Proportional to 15,490.13, 21,381.91 and 9,202.50

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Solution

The fourth proportional to 15,490.13, 21,381.91 and 9,202.50 is: 12,702.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.13 : 21,381.91 = 9,202.50 : x
  2. Step 2: Convert to fraction form
    15,490.13/21,381.91 = 9,202.50/x
  3. Step 3: Cross multiply
    15,490.13x = 21,381.91 × 9,202.50
  4. Step 4: Simplify right side
    15,490.13x = 196,767,003.77
  5. Step 5: Solve for x
    x = 196,767,003.77/15,490.13
  6. Step 6: Final answer
    x = 12,702.74

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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.