Home / 42,389.08-58,507.68-28,965.76

Finding the Fourth Proportional to 42,389.08, 58,507.68 and 28,965.76

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Solution

The fourth proportional to 42,389.08, 58,507.68 and 28,965.76 is: 39,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,389.08 : 58,507.68 = 28,965.76 : x
  2. Step 2: Convert to fraction form
    42,389.08/58,507.68 = 28,965.76/x
  3. Step 3: Cross multiply
    42,389.08x = 58,507.68 × 28,965.76
  4. Step 4: Simplify right side
    42,389.08x = 1,694,719,417.04
  5. Step 5: Solve for x
    x = 1,694,719,417.04/42,389.08
  6. Step 6: Final answer
    x = 39,980.09

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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.