Home / 15,530.76-21,430.80-9,070.56

Finding the Fourth Proportional to 15,530.76, 21,430.80 and 9,070.56

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Solution

The fourth proportional to 15,530.76, 21,430.80 and 9,070.56 is: 12,516.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.76 : 21,430.80 = 9,070.56 : x
  2. Step 2: Convert to fraction form
    15,530.76/21,430.80 = 9,070.56/x
  3. Step 3: Cross multiply
    15,530.76x = 21,430.80 × 9,070.56
  4. Step 4: Simplify right side
    15,530.76x = 194,389,357.25
  5. Step 5: Solve for x
    x = 194,389,357.25/15,530.76
  6. Step 6: Final answer
    x = 12,516.41

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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.