Home / 10,386.86-14,349.03-8,987.18

Finding the Fourth Proportional to 10,386.86, 14,349.03 and 8,987.18

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Solution

The fourth proportional to 10,386.86, 14,349.03 and 8,987.18 is: 12,415.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.86 : 14,349.03 = 8,987.18 : x
  2. Step 2: Convert to fraction form
    10,386.86/14,349.03 = 8,987.18/x
  3. Step 3: Cross multiply
    10,386.86x = 14,349.03 × 8,987.18
  4. Step 4: Simplify right side
    10,386.86x = 128,957,315.44
  5. Step 5: Solve for x
    x = 128,957,315.44/10,386.86
  6. Step 6: Final answer
    x = 12,415.43

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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.