Home / 10,030.16-13,840.80-5,781.08

Finding the Fourth Proportional to 10,030.16, 13,840.80 and 5,781.08

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Solution

The fourth proportional to 10,030.16, 13,840.80 and 5,781.08 is: 7,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,030.16 : 13,840.80 = 5,781.08 : x
  2. Step 2: Convert to fraction form
    10,030.16/13,840.80 = 5,781.08/x
  3. Step 3: Cross multiply
    10,030.16x = 13,840.80 × 5,781.08
  4. Step 4: Simplify right side
    10,030.16x = 80,014,772.06
  5. Step 5: Solve for x
    x = 80,014,772.06/10,030.16
  6. Step 6: Final answer
    x = 7,977.42

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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.