Home / 30,458.31-45,681.15-11,731.92

Finding the Fourth Proportional to 30,458.31, 45,681.15 and 11,731.92

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Solution

The fourth proportional to 30,458.31, 45,681.15 and 11,731.92 is: 17,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.31 : 45,681.15 = 11,731.92 : x
  2. Step 2: Convert to fraction form
    30,458.31/45,681.15 = 11,731.92/x
  3. Step 3: Cross multiply
    30,458.31x = 45,681.15 × 11,731.92
  4. Step 4: Simplify right side
    30,458.31x = 535,927,597.31
  5. Step 5: Solve for x
    x = 535,927,597.31/30,458.31
  6. Step 6: Final answer
    x = 17,595.45

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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.