Home / 30,140.10-45,146.34-19,041.12

Finding the Fourth Proportional to 30,140.10, 45,146.34 and 19,041.12

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Solution

The fourth proportional to 30,140.10, 45,146.34 and 19,041.12 is: 28,521.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,140.10 : 45,146.34 = 19,041.12 : x
  2. Step 2: Convert to fraction form
    30,140.10/45,146.34 = 19,041.12/x
  3. Step 3: Cross multiply
    30,140.10x = 45,146.34 × 19,041.12
  4. Step 4: Simplify right side
    30,140.10x = 859,636,877.50
  5. Step 5: Solve for x
    x = 859,636,877.50/30,140.10
  6. Step 6: Final answer
    x = 28,521.37

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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.