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Finding the Fourth Proportional to 15,068.70, 20,802.63 and 11,703.98

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Solution

The fourth proportional to 15,068.70, 20,802.63 and 11,703.98 is: 16,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,068.70 : 20,802.63 = 11,703.98 : x
  2. Step 2: Convert to fraction form
    15,068.70/20,802.63 = 11,703.98/x
  3. Step 3: Cross multiply
    15,068.70x = 20,802.63 × 11,703.98
  4. Step 4: Simplify right side
    15,068.70x = 243,473,565.47
  5. Step 5: Solve for x
    x = 243,473,565.47/15,068.70
  6. Step 6: Final answer
    x = 16,157.57

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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.