Home / 35,495-48,986.40-20,389.76

Finding the Fourth Proportional to 35,495, 48,986.40 and 20,389.76

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Solution

The fourth proportional to 35,495, 48,986.40 and 20,389.76 is: 28,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,495 : 48,986.40 = 20,389.76 : x
  2. Step 2: Convert to fraction form
    35,495/48,986.40 = 20,389.76/x
  3. Step 3: Cross multiply
    35,495x = 48,986.40 × 20,389.76
  4. Step 4: Simplify right side
    35,495x = 998,820,939.26
  5. Step 5: Solve for x
    x = 998,820,939.26/35,495
  6. Step 6: Final answer
    x = 28,139.76

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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.