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Finding the Fourth Proportional to 10,899.60, 15,047.48 and 7,501.56

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Solution

The fourth proportional to 10,899.60, 15,047.48 and 7,501.56 is: 10,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.60 : 15,047.48 = 7,501.56 : x
  2. Step 2: Convert to fraction form
    10,899.60/15,047.48 = 7,501.56/x
  3. Step 3: Cross multiply
    10,899.60x = 15,047.48 × 7,501.56
  4. Step 4: Simplify right side
    10,899.60x = 112,879,574.07
  5. Step 5: Solve for x
    x = 112,879,574.07/10,899.60
  6. Step 6: Final answer
    x = 10,356.30

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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.