Home / 21,415.59-29,557.31-14,343.08

Finding the Fourth Proportional to 21,415.59, 29,557.31 and 14,343.08

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Solution

The fourth proportional to 21,415.59, 29,557.31 and 14,343.08 is: 19,795.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.59 : 29,557.31 = 14,343.08 : x
  2. Step 2: Convert to fraction form
    21,415.59/29,557.31 = 14,343.08/x
  3. Step 3: Cross multiply
    21,415.59x = 29,557.31 × 14,343.08
  4. Step 4: Simplify right side
    21,415.59x = 423,942,642.41
  5. Step 5: Solve for x
    x = 423,942,642.41/21,415.59
  6. Step 6: Final answer
    x = 19,795.98

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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.