Home / 15,297.16-21,111.30-8,925.70

Finding the Fourth Proportional to 15,297.16, 21,111.30 and 8,925.70

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Solution

The fourth proportional to 15,297.16, 21,111.30 and 8,925.70 is: 12,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.16 : 21,111.30 = 8,925.70 : x
  2. Step 2: Convert to fraction form
    15,297.16/21,111.30 = 8,925.70/x
  3. Step 3: Cross multiply
    15,297.16x = 21,111.30 × 8,925.70
  4. Step 4: Simplify right side
    15,297.16x = 188,433,130.41
  5. Step 5: Solve for x
    x = 188,433,130.41/15,297.16
  6. Step 6: Final answer
    x = 12,318.18

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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.