Home / 35,123.36-52,688.49-12,931.55

Finding the Fourth Proportional to 35,123.36, 52,688.49 and 12,931.55

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Solution

The fourth proportional to 35,123.36, 52,688.49 and 12,931.55 is: 19,398.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,123.36 : 52,688.49 = 12,931.55 : x
  2. Step 2: Convert to fraction form
    35,123.36/52,688.49 = 12,931.55/x
  3. Step 3: Cross multiply
    35,123.36x = 52,688.49 × 12,931.55
  4. Step 4: Simplify right side
    35,123.36x = 681,343,579.42
  5. Step 5: Solve for x
    x = 681,343,579.42/35,123.36
  6. Step 6: Final answer
    x = 19,398.59

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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.