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Finding the Fourth Proportional to 28,053.48, 42,071.10 and 9,328.48

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Solution

The fourth proportional to 28,053.48, 42,071.10 and 9,328.48 is: 13,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.48 : 42,071.10 = 9,328.48 : x
  2. Step 2: Convert to fraction form
    28,053.48/42,071.10 = 9,328.48/x
  3. Step 3: Cross multiply
    28,053.48x = 42,071.10 × 9,328.48
  4. Step 4: Simplify right side
    28,053.48x = 392,459,274.77
  5. Step 5: Solve for x
    x = 392,459,274.77/28,053.48
  6. Step 6: Final answer
    x = 13,989.68

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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.