Home / 30,807.88-42,510.06-17,378.79

Finding the Fourth Proportional to 30,807.88, 42,510.06 and 17,378.79

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Solution

The fourth proportional to 30,807.88, 42,510.06 and 17,378.79 is: 23,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.88 : 42,510.06 = 17,378.79 : x
  2. Step 2: Convert to fraction form
    30,807.88/42,510.06 = 17,378.79/x
  3. Step 3: Cross multiply
    30,807.88x = 42,510.06 × 17,378.79
  4. Step 4: Simplify right side
    30,807.88x = 738,773,193.08
  5. Step 5: Solve for x
    x = 738,773,193.08/30,807.88
  6. Step 6: Final answer
    x = 23,980.01

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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.