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Finding the Fourth Proportional to 15,312.70, 22,969.05 and 13,368.70

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Solution

The fourth proportional to 15,312.70, 22,969.05 and 13,368.70 is: 20,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.70 : 22,969.05 = 13,368.70 : x
  2. Step 2: Convert to fraction form
    15,312.70/22,969.05 = 13,368.70/x
  3. Step 3: Cross multiply
    15,312.70x = 22,969.05 × 13,368.70
  4. Step 4: Simplify right side
    15,312.70x = 307,066,338.74
  5. Step 5: Solve for x
    x = 307,066,338.74/15,312.70
  6. Step 6: Final answer
    x = 20,053.05

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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.