Home / 40,890.24-61,335.36-13,188.24

Finding the Fourth Proportional to 40,890.24, 61,335.36 and 13,188.24

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Solution

The fourth proportional to 40,890.24, 61,335.36 and 13,188.24 is: 19,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.24 : 61,335.36 = 13,188.24 : x
  2. Step 2: Convert to fraction form
    40,890.24/61,335.36 = 13,188.24/x
  3. Step 3: Cross multiply
    40,890.24x = 61,335.36 × 13,188.24
  4. Step 4: Simplify right side
    40,890.24x = 808,905,448.17
  5. Step 5: Solve for x
    x = 808,905,448.17/40,890.24
  6. Step 6: Final answer
    x = 19,782.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.