Home / 15,430.23-21,293.73-8,356.64

Finding the Fourth Proportional to 15,430.23, 21,293.73 and 8,356.64

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Solution

The fourth proportional to 15,430.23, 21,293.73 and 8,356.64 is: 11,532.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.23 : 21,293.73 = 8,356.64 : x
  2. Step 2: Convert to fraction form
    15,430.23/21,293.73 = 8,356.64/x
  3. Step 3: Cross multiply
    15,430.23x = 21,293.73 × 8,356.64
  4. Step 4: Simplify right side
    15,430.23x = 177,943,929.40
  5. Step 5: Solve for x
    x = 177,943,929.40/15,430.23
  6. Step 6: Final answer
    x = 11,532.16

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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.