Home / 19,247.78-26,587.43-15,485.12

Finding the Fourth Proportional to 19,247.78, 26,587.43 and 15,485.12

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Solution

The fourth proportional to 19,247.78, 26,587.43 and 15,485.12 is: 21,389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,247.78 : 26,587.43 = 15,485.12 : x
  2. Step 2: Convert to fraction form
    19,247.78/26,587.43 = 15,485.12/x
  3. Step 3: Cross multiply
    19,247.78x = 26,587.43 × 15,485.12
  4. Step 4: Simplify right side
    19,247.78x = 411,709,411.10
  5. Step 5: Solve for x
    x = 411,709,411.10/19,247.78
  6. Step 6: Final answer
    x = 21,389.97

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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.