Home / 15,332.78-21,180.74-11,840.87

Finding the Fourth Proportional to 15,332.78, 21,180.74 and 11,840.87

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Solution

The fourth proportional to 15,332.78, 21,180.74 and 11,840.87 is: 16,357.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,332.78 : 21,180.74 = 11,840.87 : x
  2. Step 2: Convert to fraction form
    15,332.78/21,180.74 = 11,840.87/x
  3. Step 3: Cross multiply
    15,332.78x = 21,180.74 × 11,840.87
  4. Step 4: Simplify right side
    15,332.78x = 250,798,223.74
  5. Step 5: Solve for x
    x = 250,798,223.74/15,332.78
  6. Step 6: Final answer
    x = 16,357.00

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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.