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Finding the Fourth Proportional to 28,541.77, 42,802.04 and 9,816.55

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Solution

The fourth proportional to 28,541.77, 42,802.04 and 9,816.55 is: 14,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.77 : 42,802.04 = 9,816.55 : x
  2. Step 2: Convert to fraction form
    28,541.77/42,802.04 = 9,816.55/x
  3. Step 3: Cross multiply
    28,541.77x = 42,802.04 × 9,816.55
  4. Step 4: Simplify right side
    28,541.77x = 420,168,316.68
  5. Step 5: Solve for x
    x = 420,168,316.68/28,541.77
  6. Step 6: Final answer
    x = 14,721.17

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1.5x scale

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.