Home / 13,307.89-18,363.08-7,339.81

Finding the Fourth Proportional to 13,307.89, 18,363.08 and 7,339.81

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Solution

The fourth proportional to 13,307.89, 18,363.08 and 7,339.81 is: 10,127.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.89 : 18,363.08 = 7,339.81 : x
  2. Step 2: Convert to fraction form
    13,307.89/18,363.08 = 7,339.81/x
  3. Step 3: Cross multiply
    13,307.89x = 18,363.08 × 7,339.81
  4. Step 4: Simplify right side
    13,307.89x = 134,781,389.70
  5. Step 5: Solve for x
    x = 134,781,389.70/13,307.89
  6. Step 6: Final answer
    x = 10,127.93

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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.