Home / 30,381.15-45,573.10-9,319.67

Finding the Fourth Proportional to 30,381.15, 45,573.10 and 9,319.67

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Solution

The fourth proportional to 30,381.15, 45,573.10 and 9,319.67 is: 13,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.15 : 45,573.10 = 9,319.67 : x
  2. Step 2: Convert to fraction form
    30,381.15/45,573.10 = 9,319.67/x
  3. Step 3: Cross multiply
    30,381.15x = 45,573.10 × 9,319.67
  4. Step 4: Simplify right side
    30,381.15x = 424,726,001.71
  5. Step 5: Solve for x
    x = 424,726,001.71/30,381.15
  6. Step 6: Final answer
    x = 13,979.92

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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.