Home / 12,036.78-18,055.35-7,903.08

Finding the Fourth Proportional to 12,036.78, 18,055.35 and 7,903.08

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Solution

The fourth proportional to 12,036.78, 18,055.35 and 7,903.08 is: 11,854.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,036.78 : 18,055.35 = 7,903.08 : x
  2. Step 2: Convert to fraction form
    12,036.78/18,055.35 = 7,903.08/x
  3. Step 3: Cross multiply
    12,036.78x = 18,055.35 × 7,903.08
  4. Step 4: Simplify right side
    12,036.78x = 142,692,875.48
  5. Step 5: Solve for x
    x = 142,692,875.48/12,036.78
  6. Step 6: Final answer
    x = 11,854.74

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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.