Home / 30,139.17-45,210.63-7,952.57

Finding the Fourth Proportional to 30,139.17, 45,210.63 and 7,952.57

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Solution

The fourth proportional to 30,139.17, 45,210.63 and 7,952.57 is: 11,929.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.17 : 45,210.63 = 7,952.57 : x
  2. Step 2: Convert to fraction form
    30,139.17/45,210.63 = 7,952.57/x
  3. Step 3: Cross multiply
    30,139.17x = 45,210.63 × 7,952.57
  4. Step 4: Simplify right side
    30,139.17x = 359,540,434.00
  5. Step 5: Solve for x
    x = 359,540,434.00/30,139.17
  6. Step 6: Final answer
    x = 11,929.34

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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.