Home / 30,119.85-45,176.13-10,400.40

Finding the Fourth Proportional to 30,119.85, 45,176.13 and 10,400.40

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Solution

The fourth proportional to 30,119.85, 45,176.13 and 10,400.40 is: 15,599.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.85 : 45,176.13 = 10,400.40 : x
  2. Step 2: Convert to fraction form
    30,119.85/45,176.13 = 10,400.40/x
  3. Step 3: Cross multiply
    30,119.85x = 45,176.13 × 10,400.40
  4. Step 4: Simplify right side
    30,119.85x = 469,849,822.45
  5. Step 5: Solve for x
    x = 469,849,822.45/30,119.85
  6. Step 6: Final answer
    x = 15,599.34

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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.