Home / 42,921.09-64,381.64-19,531.13

Finding the Fourth Proportional to 42,921.09, 64,381.64 and 19,531.13

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Solution

The fourth proportional to 42,921.09, 64,381.64 and 19,531.13 is: 29,296.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,921.09 : 64,381.64 = 19,531.13 : x
  2. Step 2: Convert to fraction form
    42,921.09/64,381.64 = 19,531.13/x
  3. Step 3: Cross multiply
    42,921.09x = 64,381.64 × 19,531.13
  4. Step 4: Simplify right side
    42,921.09x = 1,257,445,760.89
  5. Step 5: Solve for x
    x = 1,257,445,760.89/42,921.09
  6. Step 6: Final answer
    x = 29,296.69

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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.