Home / 13,307.19-18,360.99-7,641.51

Finding the Fourth Proportional to 13,307.19, 18,360.99 and 7,641.51

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Solution

The fourth proportional to 13,307.19, 18,360.99 and 7,641.51 is: 10,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.19 : 18,360.99 = 7,641.51 : x
  2. Step 2: Convert to fraction form
    13,307.19/18,360.99 = 7,641.51/x
  3. Step 3: Cross multiply
    13,307.19x = 18,360.99 × 7,641.51
  4. Step 4: Simplify right side
    13,307.19x = 140,305,688.69
  5. Step 5: Solve for x
    x = 140,305,688.69/13,307.19
  6. Step 6: Final answer
    x = 10,543.60

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Half scale
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Double scale
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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.