Home / 28,487.79-42,746.99-11,859.30

Finding the Fourth Proportional to 28,487.79, 42,746.99 and 11,859.30

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Solution

The fourth proportional to 28,487.79, 42,746.99 and 11,859.30 is: 17,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.79 : 42,746.99 = 11,859.30 : x
  2. Step 2: Convert to fraction form
    28,487.79/42,746.99 = 11,859.30/x
  3. Step 3: Cross multiply
    28,487.79x = 42,746.99 × 11,859.30
  4. Step 4: Simplify right side
    28,487.79x = 506,949,319.21
  5. Step 5: Solve for x
    x = 506,949,319.21/28,487.79
  6. Step 6: Final answer
    x = 17,795.32

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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.