Home / 10,970.62-15,139.57-10,133.49

Finding the Fourth Proportional to 10,970.62, 15,139.57 and 10,133.49

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Solution

The fourth proportional to 10,970.62, 15,139.57 and 10,133.49 is: 13,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.62 : 15,139.57 = 10,133.49 : x
  2. Step 2: Convert to fraction form
    10,970.62/15,139.57 = 10,133.49/x
  3. Step 3: Cross multiply
    10,970.62x = 15,139.57 × 10,133.49
  4. Step 4: Simplify right side
    10,970.62x = 153,416,681.20
  5. Step 5: Solve for x
    x = 153,416,681.20/10,970.62
  6. Step 6: Final answer
    x = 13,984.32

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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.