Home / 12,574,445.28-18,868,987.08-5,287,378.32

Finding the Fourth Proportional to 12,574,445.28, 18,868,987.08 and 5,287,378.32

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Solution

The fourth proportional to 12,574,445.28, 18,868,987.08 and 5,287,378.32 is: 7,934,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574,445.28 : 18,868,987.08 = 5,287,378.32 : x
  2. Step 2: Convert to fraction form
    12,574,445.28/18,868,987.08 = 5,287,378.32/x
  3. Step 3: Cross multiply
    12,574,445.28x = 18,868,987.08 × 5,287,378.32
  4. Step 4: Simplify right side
    12,574,445.28x = 99,767,473,207,152.11
  5. Step 5: Solve for x
    x = 99,767,473,207,152.11/12,574,445.28
  6. Step 6: Final answer
    x = 7,934,145.08

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Double scale
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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.