Home / 42,939.06-64,408.59-13,358.76

Finding the Fourth Proportional to 42,939.06, 64,408.59 and 13,358.76

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Solution

The fourth proportional to 42,939.06, 64,408.59 and 13,358.76 is: 20,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,939.06 : 64,408.59 = 13,358.76 : x
  2. Step 2: Convert to fraction form
    42,939.06/64,408.59 = 13,358.76/x
  3. Step 3: Cross multiply
    42,939.06x = 64,408.59 × 13,358.76
  4. Step 4: Simplify right side
    42,939.06x = 860,418,895.75
  5. Step 5: Solve for x
    x = 860,418,895.75/42,939.06
  6. Step 6: Final answer
    x = 20,038.14

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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.