Home / 42,621.15-63,931.73-18,923.13

Finding the Fourth Proportional to 42,621.15, 63,931.73 and 18,923.13

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Solution

The fourth proportional to 42,621.15, 63,931.73 and 18,923.13 is: 28,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,621.15 : 63,931.73 = 18,923.13 : x
  2. Step 2: Convert to fraction form
    42,621.15/63,931.73 = 18,923.13/x
  3. Step 3: Cross multiply
    42,621.15x = 63,931.73 × 18,923.13
  4. Step 4: Simplify right side
    42,621.15x = 1,209,788,343.30
  5. Step 5: Solve for x
    x = 1,209,788,343.30/42,621.15
  6. Step 6: Final answer
    x = 28,384.70

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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.