Home / 10,938.80-15,095.09-6,464.00

Finding the Fourth Proportional to 10,938.80, 15,095.09 and 6,464.00

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Solution

The fourth proportional to 10,938.80, 15,095.09 and 6,464.00 is: 8,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.80 : 15,095.09 = 6,464.00 : x
  2. Step 2: Convert to fraction form
    10,938.80/15,095.09 = 6,464.00/x
  3. Step 3: Cross multiply
    10,938.80x = 15,095.09 × 6,464.00
  4. Step 4: Simplify right side
    10,938.80x = 97,574,553.96
  5. Step 5: Solve for x
    x = 97,574,553.96/10,938.80
  6. Step 6: Final answer
    x = 8,920.05

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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.