Home / 42,312.74-63,402.35-15,621.99

Finding the Fourth Proportional to 42,312.74, 63,402.35 and 15,621.99

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Solution

The fourth proportional to 42,312.74, 63,402.35 and 15,621.99 is: 23,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,312.74 : 63,402.35 = 15,621.99 : x
  2. Step 2: Convert to fraction form
    42,312.74/63,402.35 = 15,621.99/x
  3. Step 3: Cross multiply
    42,312.74x = 63,402.35 × 15,621.99
  4. Step 4: Simplify right side
    42,312.74x = 990,470,799.57
  5. Step 5: Solve for x
    x = 990,470,799.57/42,312.74
  6. Step 6: Final answer
    x = 23,408.34

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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.