Home / 12,355.08-17,051.76-7,877.40

Finding the Fourth Proportional to 12,355.08, 17,051.76 and 7,877.40

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Solution

The fourth proportional to 12,355.08, 17,051.76 and 7,877.40 is: 10,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.08 : 17,051.76 = 7,877.40 : x
  2. Step 2: Convert to fraction form
    12,355.08/17,051.76 = 7,877.40/x
  3. Step 3: Cross multiply
    12,355.08x = 17,051.76 × 7,877.40
  4. Step 4: Simplify right side
    12,355.08x = 134,323,534.22
  5. Step 5: Solve for x
    x = 134,323,534.22/12,355.08
  6. Step 6: Final answer
    x = 10,871.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.