Home / 15,516.02-21,412.32-8,801.50

Finding the Fourth Proportional to 15,516.02, 21,412.32 and 8,801.50

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Solution

The fourth proportional to 15,516.02, 21,412.32 and 8,801.50 is: 12,146.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.02 : 21,412.32 = 8,801.50 : x
  2. Step 2: Convert to fraction form
    15,516.02/21,412.32 = 8,801.50/x
  3. Step 3: Cross multiply
    15,516.02x = 21,412.32 × 8,801.50
  4. Step 4: Simplify right side
    15,516.02x = 188,460,534.48
  5. Step 5: Solve for x
    x = 188,460,534.48/15,516.02
  6. Step 6: Final answer
    x = 12,146.19

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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.