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Finding the Fourth Proportional to 28,698.58, 39,602.11 and 15,950.93

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Solution

The fourth proportional to 28,698.58, 39,602.11 and 15,950.93 is: 22,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,698.58 : 39,602.11 = 15,950.93 : x
  2. Step 2: Convert to fraction form
    28,698.58/39,602.11 = 15,950.93/x
  3. Step 3: Cross multiply
    28,698.58x = 39,602.11 × 15,950.93
  4. Step 4: Simplify right side
    28,698.58x = 631,690,484.46
  5. Step 5: Solve for x
    x = 631,690,484.46/28,698.58
  6. Step 6: Final answer
    x = 22,011.21

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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.