Home / 10,878.48-15,026.04-9,459.36

Finding the Fourth Proportional to 10,878.48, 15,026.04 and 9,459.36

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Solution

The fourth proportional to 10,878.48, 15,026.04 and 9,459.36 is: 13,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.48 : 15,026.04 = 9,459.36 : x
  2. Step 2: Convert to fraction form
    10,878.48/15,026.04 = 9,459.36/x
  3. Step 3: Cross multiply
    10,878.48x = 15,026.04 × 9,459.36
  4. Step 4: Simplify right side
    10,878.48x = 142,136,721.73
  5. Step 5: Solve for x
    x = 142,136,721.73/10,878.48
  6. Step 6: Final answer
    x = 13,065.86

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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.