Home / 15,386.16-21,232.91-8,312.60

Finding the Fourth Proportional to 15,386.16, 21,232.91 and 8,312.60

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Solution

The fourth proportional to 15,386.16, 21,232.91 and 8,312.60 is: 11,471.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.16 : 21,232.91 = 8,312.60 : x
  2. Step 2: Convert to fraction form
    15,386.16/21,232.91 = 8,312.60/x
  3. Step 3: Cross multiply
    15,386.16x = 21,232.91 × 8,312.60
  4. Step 4: Simplify right side
    15,386.16x = 176,500,602.28
  5. Step 5: Solve for x
    x = 176,500,602.28/15,386.16
  6. Step 6: Final answer
    x = 11,471.39

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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.