Home / 39,415.41-54,393.63-21,510.70

Finding the Fourth Proportional to 39,415.41, 54,393.63 and 21,510.70

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Solution

The fourth proportional to 39,415.41, 54,393.63 and 21,510.70 is: 29,684.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.41 : 54,393.63 = 21,510.70 : x
  2. Step 2: Convert to fraction form
    39,415.41/54,393.63 = 21,510.70/x
  3. Step 3: Cross multiply
    39,415.41x = 54,393.63 × 21,510.70
  4. Step 4: Simplify right side
    39,415.41x = 1,170,044,840.19
  5. Step 5: Solve for x
    x = 1,170,044,840.19/39,415.41
  6. Step 6: Final answer
    x = 29,684.96

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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.