Home / 30,421.20-45,639.36-17,951.52

Finding the Fourth Proportional to 30,421.20, 45,639.36 and 17,951.52

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Solution

The fourth proportional to 30,421.20, 45,639.36 and 17,951.52 is: 26,931.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.20 : 45,639.36 = 17,951.52 : x
  2. Step 2: Convert to fraction form
    30,421.20/45,639.36 = 17,951.52/x
  3. Step 3: Cross multiply
    30,421.20x = 45,639.36 × 17,951.52
  4. Step 4: Simplify right side
    30,421.20x = 819,295,883.83
  5. Step 5: Solve for x
    x = 819,295,883.83/30,421.20
  6. Step 6: Final answer
    x = 26,931.74

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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.