Home / 12,430.02-17,155.78-7,955.66

Finding the Fourth Proportional to 12,430.02, 17,155.78 and 7,955.66

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Solution

The fourth proportional to 12,430.02, 17,155.78 and 7,955.66 is: 10,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.02 : 17,155.78 = 7,955.66 : x
  2. Step 2: Convert to fraction form
    12,430.02/17,155.78 = 7,955.66/x
  3. Step 3: Cross multiply
    12,430.02x = 17,155.78 × 7,955.66
  4. Step 4: Simplify right side
    12,430.02x = 136,485,552.71
  5. Step 5: Solve for x
    x = 136,485,552.71/12,430.02
  6. Step 6: Final answer
    x = 10,980.32

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Double scale
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Similar ratio
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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.