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Finding the Fourth Proportional to 9,430.40, 13,222 and 9,430.40

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Solution

The fourth proportional to 9,430.40, 13,222 and 9,430.40 is: 13,222

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,430.40 : 13,222 = 9,430.40 : x
  2. Step 2: Convert to fraction form
    9,430.40/13,222 = 9,430.40/x
  3. Step 3: Cross multiply
    9,430.40x = 13,222 × 9,430.40
  4. Step 4: Simplify right side
    9,430.40x = 124,688,748.80
  5. Step 5: Solve for x
    x = 124,688,748.80/9,430.40
  6. Step 6: Final answer
    x = 13,222

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.