Home / 30,214.60-45,338.10-12,686.20

Finding the Fourth Proportional to 30,214.60, 45,338.10 and 12,686.20

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Solution

The fourth proportional to 30,214.60, 45,338.10 and 12,686.20 is: 19,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,214.60 : 45,338.10 = 12,686.20 : x
  2. Step 2: Convert to fraction form
    30,214.60/45,338.10 = 12,686.20/x
  3. Step 3: Cross multiply
    30,214.60x = 45,338.10 × 12,686.20
  4. Step 4: Simplify right side
    30,214.60x = 575,168,204.22
  5. Step 5: Solve for x
    x = 575,168,204.22/30,214.60
  6. Step 6: Final answer
    x = 19,036.10

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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.