Home / 30,509.84-42,070.92-19,156.88

Finding the Fourth Proportional to 30,509.84, 42,070.92 and 19,156.88

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Solution

The fourth proportional to 30,509.84, 42,070.92 and 19,156.88 is: 26,415.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,509.84 : 42,070.92 = 19,156.88 : x
  2. Step 2: Convert to fraction form
    30,509.84/42,070.92 = 19,156.88/x
  3. Step 3: Cross multiply
    30,509.84x = 42,070.92 × 19,156.88
  4. Step 4: Simplify right side
    30,509.84x = 805,947,565.93
  5. Step 5: Solve for x
    x = 805,947,565.93/30,509.84
  6. Step 6: Final answer
    x = 26,415.99

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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.