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Finding the Fourth Proportional to 10,130.58, 13,980.20 and 5,655.20

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Solution

The fourth proportional to 10,130.58, 13,980.20 and 5,655.20 is: 7,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.58 : 13,980.20 = 5,655.20 : x
  2. Step 2: Convert to fraction form
    10,130.58/13,980.20 = 5,655.20/x
  3. Step 3: Cross multiply
    10,130.58x = 13,980.20 × 5,655.20
  4. Step 4: Simplify right side
    10,130.58x = 79,060,728.86
  5. Step 5: Solve for x
    x = 79,060,728.86/10,130.58
  6. Step 6: Final answer
    x = 7,804.17

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Half scale
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Double scale
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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.