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Finding the Fourth Proportional to 29,303.60, 40,398.80 and 18,543.12

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Solution

The fourth proportional to 29,303.60, 40,398.80 and 18,543.12 is: 25,564.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,303.60 : 40,398.80 = 18,543.12 : x
  2. Step 2: Convert to fraction form
    29,303.60/40,398.80 = 18,543.12/x
  3. Step 3: Cross multiply
    29,303.60x = 40,398.80 × 18,543.12
  4. Step 4: Simplify right side
    29,303.60x = 749,119,796.26
  5. Step 5: Solve for x
    x = 749,119,796.26/29,303.60
  6. Step 6: Final answer
    x = 25,564.09

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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.