Home / 42,681.60-64,022.56-19,280.64

Finding the Fourth Proportional to 42,681.60, 64,022.56 and 19,280.64

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Solution

The fourth proportional to 42,681.60, 64,022.56 and 19,280.64 is: 28,921.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,681.60 : 64,022.56 = 19,280.64 : x
  2. Step 2: Convert to fraction form
    42,681.60/64,022.56 = 19,280.64/x
  3. Step 3: Cross multiply
    42,681.60x = 64,022.56 × 19,280.64
  4. Step 4: Simplify right side
    42,681.60x = 1,234,395,931.24
  5. Step 5: Solve for x
    x = 1,234,395,931.24/42,681.60
  6. Step 6: Final answer
    x = 28,921.03

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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.