Home / 30,697.24-42,339.52-18,750.76

Finding the Fourth Proportional to 30,697.24, 42,339.52 and 18,750.76

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Solution

The fourth proportional to 30,697.24, 42,339.52 and 18,750.76 is: 25,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.24 : 42,339.52 = 18,750.76 : x
  2. Step 2: Convert to fraction form
    30,697.24/42,339.52 = 18,750.76/x
  3. Step 3: Cross multiply
    30,697.24x = 42,339.52 × 18,750.76
  4. Step 4: Simplify right side
    30,697.24x = 793,898,178.04
  5. Step 5: Solve for x
    x = 793,898,178.04/30,697.24
  6. Step 6: Final answer
    x = 25,862.20

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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.