Home / 28,964-39,970.32-16,388.76

Finding the Fourth Proportional to 28,964, 39,970.32 and 16,388.76

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Solution

The fourth proportional to 28,964, 39,970.32 and 16,388.76 is: 22,616.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964 : 39,970.32 = 16,388.76 : x
  2. Step 2: Convert to fraction form
    28,964/39,970.32 = 16,388.76/x
  3. Step 3: Cross multiply
    28,964x = 39,970.32 × 16,388.76
  4. Step 4: Simplify right side
    28,964x = 655,063,981.60
  5. Step 5: Solve for x
    x = 655,063,981.60/28,964
  6. Step 6: Final answer
    x = 22,616.49

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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.