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Finding the Fourth Proportional to 28,030.64, 42,047.04 and 7,254.20

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Solution

The fourth proportional to 28,030.64, 42,047.04 and 7,254.20 is: 10,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.64 : 42,047.04 = 7,254.20 : x
  2. Step 2: Convert to fraction form
    28,030.64/42,047.04 = 7,254.20/x
  3. Step 3: Cross multiply
    28,030.64x = 42,047.04 × 7,254.20
  4. Step 4: Simplify right side
    28,030.64x = 305,017,637.57
  5. Step 5: Solve for x
    x = 305,017,637.57/28,030.64
  6. Step 6: Final answer
    x = 10,881.58

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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.