Home / 10,345.36-15,514.80-5,412.40

Finding the Fourth Proportional to 10,345.36, 15,514.80 and 5,412.40

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Solution

The fourth proportional to 10,345.36, 15,514.80 and 5,412.40 is: 8,116.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.36 : 15,514.80 = 5,412.40 : x
  2. Step 2: Convert to fraction form
    10,345.36/15,514.80 = 5,412.40/x
  3. Step 3: Cross multiply
    10,345.36x = 15,514.80 × 5,412.40
  4. Step 4: Simplify right side
    10,345.36x = 83,972,303.52
  5. Step 5: Solve for x
    x = 83,972,303.52/10,345.36
  6. Step 6: Final answer
    x = 8,116.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.