Home / 10,278.10-14,167.93-8,386.34

Finding the Fourth Proportional to 10,278.10, 14,167.93 and 8,386.34

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Solution

The fourth proportional to 10,278.10, 14,167.93 and 8,386.34 is: 11,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.10 : 14,167.93 = 8,386.34 : x
  2. Step 2: Convert to fraction form
    10,278.10/14,167.93 = 8,386.34/x
  3. Step 3: Cross multiply
    10,278.10x = 14,167.93 × 8,386.34
  4. Step 4: Simplify right side
    10,278.10x = 118,817,036.14
  5. Step 5: Solve for x
    x = 118,817,036.14/10,278.10
  6. Step 6: Final answer
    x = 11,560.22

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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.