Home / 10,547.72-15,807-8,979.56

Finding the Fourth Proportional to 10,547.72, 15,807 and 8,979.56

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Solution

The fourth proportional to 10,547.72, 15,807 and 8,979.56 is: 13,456.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,547.72 : 15,807 = 8,979.56 : x
  2. Step 2: Convert to fraction form
    10,547.72/15,807 = 8,979.56/x
  3. Step 3: Cross multiply
    10,547.72x = 15,807 × 8,979.56
  4. Step 4: Simplify right side
    10,547.72x = 141,939,904.92
  5. Step 5: Solve for x
    x = 141,939,904.92/10,547.72
  6. Step 6: Final answer
    x = 13,456.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.