Home / 15,887.66-21,925.96-9,174.51

Finding the Fourth Proportional to 15,887.66, 21,925.96 and 9,174.51

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Solution

The fourth proportional to 15,887.66, 21,925.96 and 9,174.51 is: 12,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.66 : 21,925.96 = 9,174.51 : x
  2. Step 2: Convert to fraction form
    15,887.66/21,925.96 = 9,174.51/x
  3. Step 3: Cross multiply
    15,887.66x = 21,925.96 × 9,174.51
  4. Step 4: Simplify right side
    15,887.66x = 201,159,916.34
  5. Step 5: Solve for x
    x = 201,159,916.34/15,887.66
  6. Step 6: Final answer
    x = 12,661.40

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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.